Guy to Gal and Back Again pt4


I don't know how long I pleasured myself.  It's hard to gage time while you're
completely in ecstasy, but I would bet that my orgasm lasted about twenty five to
thirty minutes before I collapsed from exhaustion.  The next thing I knew, I was
being shaken gently awake.

I opened my eyes to see MaryAnne staring back at me.  Once I was awake, she
stopped staring at my eyes and concentrated her full attention on my tits.

"What the hell happened here?" she asked.  "How much cum did you get?"

"I have no idea," I replied.

"Dammit, girl, it looks like you were the guest of honor at a gang bang!"

"Actually, that's kind of what happened."

I went on to explain the night before, and how horny it had made me, and MaryAnne
nodded understandingly, took me in her arms, and started kissing my neck and
breasts.  I lay back as she undressed herself with expert fingers while her mouth
remained glued to my nipples.  Then, after becoming completely naked, she trailed
her head down along my stomach to my hairless pussy.  Her mouth enveloped my clit
and she flicked it with her tongue.  She licked me up and down either side of my
slit, where the outer lips met the leg.  She fucked me with her tongue.  She did
all the things to me that she knew would make me cum.

As I was approaching orgasm, I suddenly remembered something.  I had never told
MaryAnne that it was sperm that made me grow.  As far as she knew, my enlarging
tits had no reason at all.  She certainly hadn't known me long enough to observe
that my tits only grew when I came into contact with cum.  Suddenly, I remembered
the time when she had called me Samanthatopher while she was half asleep.  I thought
it had been a coincidence, but it was because she knew it was my real name. Also,
I now knew why her voice was so familiar.  It was the voice that I had heard
whispering in my ear while I was strapped to the bed, having just been changed
into a woman.
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I was very careful not to betray my sudden revelation.  She licked my cunt to
orgasm, and I raised her face up to my own, kissing her mouth and reaching around
to feel her ass.  I kneaded and massaged her ass cheeks as I pushed her back onto
the bed, my own wide hips (wider than hers!) between my legs and my pussy rubbing
up against hers, humping her as if I had a cock.  All the time, though, I was
thinking of how I could force her to change me back into a man.  I rubbed my
pussy against hers, bringing us both to an orgasm after an enjoyable eternity of
rubbing our very female bodies together, and all the time I was bent on revenge.

MaryAnne had gone out to order custom made bras for me, and had returned an hour
later with a story that the lingerie shop she had gone to had "happened" to have
some extremely large sizes on hand.  I now had bras ranging in size from an I cup
(keep in mind these are unofficial sizes, they were printed on the bras but
anything this big had to be custom made) up to an M cup.  That one was truly
amazing.  I thought to myself that I wouldn't need it, but I then reflected on my
now overpowering desire for cum, and wasn't so sure.

Regardless, I still couldn't go outside without attracting too much attention, so
I had no choice but to stay in.  At least those bras made it easier to move
around, and at least they were now so large that half cup bras hadn't been an
option.  When I first tried it on, the I cup bra fit well, if a bit snugly, but
that didn't last very long.

As I was laying on my bed, thoroughly bored and more than a little horny, there
was a knock on the door that separated our room from the guys'.  It opened
without waiting for permission, and I saw Jon standing there in his boxer
shorts.

"I wanted to apologize for last night..." he started.

I knew that wasn't what he wanted, and I was quite mad at him for causing me to
be gang banged, but all that evaporated as soon as I saw the bulge in the front
of his boxers.  Immediately, I was across the room, frantic to get some cum.  I
tried to resist the craving, but it was now just too strong.  I tried to force
myself to make him use a condom, so that I could get some satisfaction from his
dick and still avoid any more breast growth, but I was unable to do even that. 
The moment I saw him, my gaze was riveted to his crotch.  Now, what I craved
wasn't even sex, that was secondary.  What I needed was cum. If someone had
offered it to me in liter sized bottles, I wouldn't even have paused to say
"thank you."  The craving was now THAT strong.

I dropped to my knees in front of him and pulled his boxers down to his ankles in
one smooth movement.  I knew what he thought of me; in his mind I was just a
slut, not so much a person as a convenient piece of ass.  That was obvious from
the way he had let me be gang banged last night.  However, he wanted to stay on
good enough terms to keep fucking me, and so he tried to apologize.  Instead of
letting him, I had reinforced my slut status.  But I really had no choice, the
craving was completely in control.

I took his instantly hard cock into my mouth.  I marveled once again, as I had
every time, at how good it felt that he was shaved as smooth as me.  I had never
heard of guys doing that when I was one, but I was glad that one of the guys I
had fucked as a woman did it.  I took his dick deeper and deeper into my throat,
until his dick was pushing down my throat.  My gag reflex was, however,
overridden by my insatiable desire for cum, so I just kept inserting him further
into my face. Finally, my lips were wrapped around the base of his cock, and
still I could fell no trace of hair or stubble.  Jon was so fastidious about
shaving his cock that it was as smooth as my pussy, it felt like there was no
hair to grow there.  I loved the feeling of his slick shaft sliding in and out of
my face.

I pulled my head back until only the tip of his cock was still between my lips,
and grasped the base with my right hand.  I pumped the base with my hand while I
orally stimulated the head.  In fact, his dick was large enough that I could pump
the base my hand and still pump a good length of the shaft in and out of my
mouth, so I soon found myself doing that.  Feeling his hairless cock in both my
hand and my mouth was extremely satisfying, but I still had my own needs, so I
reached down between my parted, kneeling legs with my other hand and began to
finger my own clean shaven cunt.  It was already dripping on the floor, I was so
horny.

Sucking Jon's cock was an enjoyable experience, but at the moment, it was only a
means to an end.  All I really needed right now was cum, so I took what I felt to
be the swiftest form of action.  I removed his dick from my mouth, making sure it
was well lubricated with saliva and pre-cum, and leaned back.  I took my left
hand from my cunt only long enough to unclasp my bra, letting it fall uncaringly
to the floor, and then returned the hand to it's place at my pussy, making sure
Jon could see what I was doing.  With my right hand, I continued to jack him
off.  I rubbed my hand back and forth like I had loved to along my own cock, as
fast as possible, somewhat roughly, and concentrating on the head.  I knew that
this would be the fastest way to make him cum.

Predictably, I was right.  Jon's eyes were looking past his cock straight down
to where I was fingering myself.  His eyes were glued to my crotch as I slid two
fingers very quickly in and out of my hole.  I could see that it was as much of a
turn on for him as it had been for me when I was a man and one of my girlfriends
would masturbate in front of me.  My other hand was moving back and forth on his
cock so fast it was only a blur.  After only a minute or so of this treatment,
Jon's eyes forced themselves shut and he fell back against the wall, groaning. 
His entire body tensed up, but I continued to jerk him off as fast as before.  As
I felt his spasms start, I aimed his cock at the place I needed the sperm most,
and he shot his load all over my humongous tits.

It came out in three spurts, and each was bigger than the last.  After the third,
a good portion of my breasts was covered with Jon's creamy, white cum.  I could
feel them starting to tingle, but I was powerless to stop.  I didn't even stop
jacking Jon's dick, I just continued to stroke it while it limpened and then
quickly began to harden again.  Inside of ten minutes after the first, Jon
deposited a second load of cum onto my tits.

After his second orgasm, Jon pulled himself out of my grasp and staggered,
weakly, over to my bed.  He collapsed there on his back, as if he was unable to
stand any longer.  I followed him to the bed and started to suck his cock.  I
sucked as hard as I could, but I still could not produce an erection.  I was
frantic!  I NEEDED more cum!  I pulled my mouth off of his dick and crawled up
over his body.  I spread my legs over him and proceeded to rub my soaking wet
pussy against his limp dick, grinding my pubic bone into his.  My hands were
resting on the bed to either side of him, and my arms were still fully extended,
but my huge tits still rested heavily on his chest and stomach.  I rubbed them
back and forth over him, rubbing his own cum off of my breasts and into his skin.
 I didn't mind losing it;  It had already done it's job.  I could feel my tits
tingling like they were falling asleep, and I imagined I could almost feel them
growing.

The combination of my crotch grinding against his and my slippery tits sliding
over his chest got Jon's cock hard again, and as it began to sMaryAnneen it slipped
immediately into my gaping, wet pussy.  Just a half hour ago I had been remarking
again on how sore I was there from last night, but I was completely unaware of
any discomfort now.  I did still feel stretched, though.  Even Jon's huge cock
wasn't filling me completely.  I wanted his cum, though, so I clenched down with
my pussy muscles to give him the maximum sensation possible, and continued to
grind against him like I had been.  Jon was exhausted, lying there like a wet
rag, so I had to do all the work of fucking him.  I rolled my hips back and
forth, and side to side, trying to coax the cum from his balls.  My slippery
breasts were still rubbing against his chest, much more wildly now as I thrashed
around on top of him, desperate for his sperm.  It took almost ten minutes (an
eternity considering the effort I was putting forth) until he shot another load
up into my pussy.

I immediately jumped off of his cock and started to suck it again.  I lapped up
the few remaining drops of cum as they squeezed out of the tip of his dick and
continued to blow him as his erection softened.  I still needed cum, but I was
not sure if I would be able to force Jon's overused cock into another erection. 
I concentrated all my efforts on it for almost ten minutes, becoming more frantic
as time went by, but he stayed limp.

Finally, I had an inspiration.  Continuing to suck him off, I slipped one hand
back down to my cunt.  I finger fucked myself furiously for a few seconds, trying
to get all of the juice from my soaking wet pussy onto my finger.  Then, I
brought the finger back up to Jon's crotch. I traced a hairless line around from
the base of his cock, up against his balls, and down between his incurving cheeks
to his asshole.  I slipped the finger gently past his sphincters, realizing that
his ass was as tight as mine had been a few short days ago.  The difference was
much more apparent now.  I pushed my finger into his ass a little bit past the
first knuckle, then curved it slightly up towards his dick and proceeded to rub
his prostate.

The effect was immediate.  Jon's dick stiffened at once, and almost as
immediately I was up and on top of it.  I knew that I would have to keep him
horny enough that he didn't lose his erection, which could happen even while I
was fucking him full speed, as exhausted as he was, so I squatted down over his
cock and inserted it into my ass instead of my pussy.  Keeping my back straight,
with my amazing breasts standing out from my chest, I made sure he could see that
I was fingering my cunt as his cock pumped in and out of my asshole.  I could
tell he was enjoying himself in spite of his exhaustion, but I also figured this
would be the last load I would get out of him.

I rode him for all I was worth, pressing my asshole down onto his cock with all
my strength.  I clenched at his cock with my muscles, and pumped my hand in and
out of my pussy, inserting all four fingers into myself.  He watched with
interest, but despite his exhaustion, it didn't take very long before he closed
his eyes and shot his fourth load up into my asshole.

I stayed there, no longer bouncing up and down in his lap but still fingering my
pussy (because it felt good) and keeping his cock planted firmly all the way up
my asshole (so that I would be sure not to waste any of his sperm.)  After I was
sure I would get no more from him, I left him there unconscious on my bed, and
went into his room to see if ted was there.

ted was lying on his back on his bed, the sheet thrown back.  I could see that he
was naked, he had probably been the one to bring me back to my room, in the dark
area of my memory that lay between the last I could remember of the gang bang
last night and the first thing I could remember about waking up this morning.  He
had probably been taking a few liberties with my near-unconscious form, and
staggered, naked, back into his own room to fall asleep.

All of which made no difference.  I didn't care, when I saw his morning hardon
poking up from the middle of his pubic hair.  ted's dick wasn't as big as Jon's,
he had pubic hair (which I didn't really like,) and he wasn't as good in bed. 
None of this mattered to me either, because at the moment, all I needed was cum.

I went over to ted, leaning down to plant my mouth on his dick.  I wrapped my
lips around his shaft, considering to myself that I actually knew from experience
how good of a way to wake up this was. I took his cock completely into my mouth
easily, especially after Jon's monster.  I rubbed my tongue and lips up and down
the shaft, again going as fast as possible to get as much sperm as I could from
him in the time I had before he was too tired.

ted woke up with a grin on his face, which was understandable. Consider this: he
was hung over, but he had gang banged a hot slut the night before, and she was
waking him up with a morning blowjob.  Now that's the breakfast of champions.

Needless to say, it didn't take too long before ted shot his first wad in my
mouth, and I savored the taste while I continued to suck him. It bothered me for
a moment that I was actually enjoying the taste of cum, but I chalked it up to
the craving that had been artificially induced in me.  In any case, it was hard
to worry about anything while you were that horny.  I just shrugged, and
continued to suck his cock to orgasm again, fingering myself while I did.  This
time I jacked him off at the last minute so his cum would shoot on my tits,
because that had made them tingle extremely pleasurably when Jon did it.  This
went on much the same way it had with Jon, with ted fucking me until he passed
out.  I then went back into my room, to find Jon still passed out on my bed.  I
roused him to a sluggish semi-conscious state, managed to maneuver him back into
his own room, and got one more load of cum shot onto my tits, before he passed
out for good.  I went back to my room and lay down in my bed, masturbating with
my vibrator and MaryAnne's dildo until I myself passed out.

I settled into a steady routine for the next few days.  Luckily, it was the
weekend, because in the whole first week of classes I had only gone to one.  I at
least got through Saturday and Sunday without skipping anything, if only because
there was nothing to skip.  I just laid around my room (laying was easier,
because then I didn't have to support my tits, which after the session the
morning after the gang bang, had grown another size, to an estimated J cup,) and
masturbated, fucking MaryAnne when she was around and when the boys were around,
getting all the cum I could squeeze out of them.

I couldn't help myself.  I knew the effect it was having on my body, and though
it made me horny I detested it, but it was as if I was some sort of sperm addict.
 I would assure myself that I would retain my self control, but as soon as one of
them came into the room I was on my knees, with my gigantic tits hanging out,
sucking for all I was worth.

By Sunday, when my K cup bra fit, I had decided that the next time I could, I had
to follow MaryAnne out of the dorm.  I knew she didn't have any classes, because I
had looked in her backpack while she was in the shower and it was filled with
blank notebooks, but I didn't know where she went when she left the dorm, or
where she had done this to me.  She left a couple of times over the weekend, and
was gone most of the day Monday and Tuesday, but I didn't dare go out on Monday
with tits that were by now an L cup, apart from the fact that I knew that as soon
as I reached the courtyard, I would be naked in the middle of it trying to fuck
or suck any guy I saw.

By Tuesday night, I was starting to despair.  My tits were now barely fitting
into the M size bra, which was the largest I had.  I weighed about 150 pounds,
and about 50 of it was tits and ass.  Just for the hell of it, I had found a tape
measure and taken my measurements: 62-22-41.  How did that compare to the 6'2"
guy I used to be?  I was starting to have trouble getting up and moving around. 
I knew that my time was limited, and so I was glad when MaryAnne got ready to
leave at about eleven at night.  This late, on a Tuesday night, the campus should
be fairly deserted, and I could move around without too much fear.

MaryAnne left by the door, and I had to hurriedly get dressed and follow her.  The
only problem was, I hadn't worn anything but a bra (by now, necessary except when
I was actually letting Jon or ted cum on my tits) since Friday.  The first thing
I did was insert MaryAnne's dildo into my cunt, and my vibrator into my asshole,
and turn it on. I knew that if I were to have any chance of returning to my
former self, I could not be sidetracked if I happened to see some guy and crave
his cum.  This method had worked before, and I was praying that it would work
now.

It took me a minute to find something that would actually fit over my tits, and a
minute more to mind some pants that I could pull up past my hips and ass.  By
that time, I was sure MaryAnne would be in the elevator and I would lose her.  My
heart sank.  As a last resort, I decided to try climbing down the tree outside
our window.

It was much harder than I thought.  My female arms had nowhere near the strength
in them that my male arms had had, and apart from that my breasts, even strapped
securely into the bra, kept getting in the way. Finally, I reached the bottom of
the tree and saw MaryAnne, walking off into the shadows.  I followed her.

She walked a little ways off campus, ducking into a back alley and finally
entering a building through a sliding garage type door.  I went around to the
side of the building and climbed through a window that had been left open a
crack, my heart beating up into my throat, because I was sure someone was going
to hear me.  I crept from the room in which I found myself out towards the light
and speech I could hear from further within the building.

I arrived in a large room that appeared to have been jury rigged as some sort of
laboratory.  There was a lot of equipment I didn't understand, but only a very
few dim lights, which allowed me to hide back in the shadows.  MaryAnne was in the
middle of the room, standing in front of a table, facing and speaking to a group
of women (thank god it wasn't men, I don't think I could have controlled the
craving.)

"...so as I have explained," she said, "this chemical forces a change in the
genetic makeup of an individual, substituting an X chromosome for the normal Y
one, and changing other genetic material that we choose.  We can, for example,
program for a particular height, or appearance, or hair color.  Also in this
syringe," at which point she held up a syringe, "is a chemical we have formulated
to accelerate cell decay and reproduction, so that that individual's body is
almost completely replaced with new cells, bearing the new genetic code.  We have
tested this on a human male subject, who had been living as a woman for slightly
more than a week now.

In this next vial, we have a substance that causes what in some ways is an even
more interesting.  It causes a reaction which is to be set off by the release of
chemicals within the body, or the physical contact of certain substances from
outside the body.  In our subjects case, he... or she I guess I must now say, had
been chemically programmed to react to human male ejaculate.  When uh, SHE comes
into contact with ejaculate, she experiences a destabilization of the fat cells
recently ingested, causing them to reconfigure themselves in such a way as to
appear to gain mass.  This is actually a rather esoteric point, I won't bore you
with the details, but the end result is that this fatty deposit is routed
directly to certain, shall we say desirable, portions of the anatomy.  I've seen
this subject," she continued with a smirk, "and I can only describe the current
proportions as mammoth."

"This next vial," she continued, "is untested, but we're fairly sure it will
work.  It is the same thing in reverse, to transform a woman into a man.  It
contains also a compound which will cause penis growth, like the aforementioned
breast and hip area growth, but in response to the chemicals released internally
in a man during orgasm rather than from some outside source."

"This next vial we are particularly proud of.  It should alter the actual
chemical configuration of the brain.  As you know, the brain works on electrical
pulses conveyed chemically, so this compound is designed to latch onto and
stimulate the pleasure sensors of the brain when the brain itself receives
certain stimuli.  Particularly, the first object that registers in the mind as a
person that the subject sees after the drug is administered will be the stimuli. 
The subject will bond to that person like a baby duck bonds to it's mother at
hatching, and their pleasure sensors will stimulate them while in the presence of
that other person.  I'm sure you can see the uses of these drugs as useful in all
manner of brainwashing enterprises.  Now, if you'll follow me, I'll show you the
next part of our facility..." she trailed off, leading the group out the door.

I had marked very carefully which syringe she had said was the one to turn
females into males.  I walked slowly over to the table, realizing that my object
was finally within my grasp!  I could be a man again!

Suddenly, though, I remembered that I would not be my old self again. I would
look like whatever they had genetically programmed into that drug.  Also, she had
said something about penis growth occurring at each orgasm.  Did I really want my
dick growing out of control, like my tits and ass were now?  I realized that I
was still doomed.

Suddenly, however, I got an idea.  I took the syringe anyway, but didn't inject
myself with it.  I also took the syringe next to it, and quickly exited the
building the way I had come in, returning to my dorm without incident.

Once there, I stripped down to bra and panties, and then lay back on my bed and
removed those, becoming completely naked.  I rubbed my huge tits, thinking that
if all went well, this might be the last chance I had to play with them.  My
right hand slipped down to my cunt, and I masturbated myself as a woman for
perhaps (hopefully!) the last time. I took MaryAnne's dildo from where I had left
it lying next to the bed when I removed my panties, and began to ream my pussy
furiously with it.  After a while, I realized though that the sensation I wanted
for my last female masturbation was that of my finger rubbing against my clit, so
I removed the dildo and started to get myself off by hand.

The feeling was amazing.  As my transformation progressed, I had gotten more
horny and also more sensitive to pleasure, and by now I was at a point where I
was impossibly sensitive to sex.  I was constantly turned on, craving cum, and
the slightest touch to my clitoris could send me into shivers of ecstasy. 
There's no way to describe what it felt like;  It was so much better than it had
been when I was first changed into a woman that it was almost a different
sensation.

After fingering my clit for a while, I realized that my last masturbation as a
girl wouldn't really be complete unless I finger fucked my asshole, so I lubed up
my left hand with pussy juice and stuck it up into my ass.  The hole was already
loosened from the vibrator that had recently been buzzing away in there, as well
as more than a week's worth of old fashioned buttfucking by thirty or so
different guys.  I stuck my finger all the way up into my ass, enjoying the full
feeling there, and wiggled it around while I rubbed my clit with the other hand
until I came.

As was usual since my transformation into a woman, I was still horny. It suddenly
occurred to me that since I would be turning back into a man later tonight, I
could for the first time indulge my lust for cum without any fear of the
consequences.  Certainly, my breasts and hips would grow as before, but any
changes would be completely temporary, only lasting until later tonight when I
was a man again.  I jumped up from my bed and rushed to the room next door.

The guys were laying in their beds, having turned in for the night.  I knew they
weren't expecting me to take any initiative;  since the gang bang I hadn't been
able to refuse a good fucking, but I still didn't seek it out, trying to slow the
growth of my breasts.  Now, however, I didn't care.  All I knew was that I had an
insatiable thirst for cum and tonight I could do my best to quench it, knowing
that the consequences would be only temporary.  In fact, the small part of my
mind that couldn't help enjoying the huge breasts I now possessed had me actually
looking forward to my growth.  I wondered how big they could actually get?

I decided to find out.  I went over to Jon's bed and climbed on, pulling down
the sheets to expose his already hard cock.  I took it into my mouth immediately,
sucking him as far as I could into my throat.  Since the gang bang, my only
objective in having sex with these guys was to absorb their cum.  It was all I
wanted, orgasms were secondary almost to the point of unimportance.  I sucked off
Jon's cock as quickly as I could, not even really interested when he woke up. 
All I knew was that for the first time since I had become a woman I was able to
indulge my lust for cum without fear or the consequences, and I gloried in it.

Jon started to moan as he came the first time, and the noise he was making woke
up his roommate.  I didn't even acknowledge ted's existence, I just aimed Jon's
spurting cock so that it shot onto my breasts, and then took him back into my
mouth.  I needed more sperm.

ted, being the ass crazy pervert that I had known he was, immediately got behind
me and started fucking my pussy, staying in that hole only long enough to
lubricate his dick before he drove his organ up into my anus.  I ignored him,
knowing that he was enjoying himself, and that his cum in my ass would intensify
the lovely throbbing in my hips and breasts.

Once again, I could feel the lovely sensation of my breasts growing. This time,
all I did was enjoy it without reservation.  ted fucked my ass four times before
he collapsed, and I managed to coax an unbelievable SEVEN loads of Jon's cum out
of his dick and onto my tits, before he also collapsed.  All through this
episode, I was only able to think about my rapidly enlarging breasts.  The sex
was almost at the back of my mind; I enjoyed it in a completely different way,
just as the impetus for making my tits grow.  That was my real objective, and all
I was really interested in.

After I had gotten all the satisfaction from Jon and ted that they were capable
of giving, and my sperm craving was as satiated as it would ever be, I returned
to my room.  On the way, I stopped to check the size of my breasts in the mirror.

They were gigantic.  Mounds of flesh stood out from my chest in a way that was
completely unbelievable, so impossibly buoyant for their size that I would be
convinced they were fake if they hadn't been mine. They were so large they must
have made up half my weight, which must now be nearing one-eighty, which was what
I had weighed as a man.

Tearing my gaze away from my awe-inspiring tits, I went into the room I shared
with MaryAnne.  She was lying naked on her bed, on her stomach with her ass
sticking up into the air.  Seizing an opportunity, I grabbed the syringe with the
mind control drug in it and injected it all into her ass.

MaryAnne woke up from the sudden pain she felt in her right ass cheek, and started
to fight against me, realizing what must be happening.  I struggled to hold her
down, with the weight of my tits on her chest being my only real advantage, but
in my weakened female state she was much stronger than me.  I struggled to
overpower her, wondering how long it would be until the drug took effect, until
suddenly and without warning, I felt her relax.

I looked down into her face and saw her looking back at me with such a look of
adoring, puppy-dog love that I knew she couldn't be faking.  I immediately got
up, went over to where I had hidden the syringes, and got the other one.  I
injected it's contents into her ass, and she didn't raise any protest at all.

I was amazed at the results.  I hadn't expected it to be this fast. Within about
ten minutes, the MaryAnne I knew disappeared and was replaced by a 6'5", muscular,
well hung stud.  The changes were just slow enough that you couldn't actually see
them happening, but fast enough that you could close your eyes for a moment and
reopen them to see an obviously more masculine figure standing in front of you.

"MaryAnne," I started, eager to get some information before succumbing to what I
knew would come next, "can you change me back into my male self?"  I wanted to
get right to the point, before the craving I now felt for MaryAnne's new cock took
over.

"Certainly, Samantha," she replied.  "You see, some of your cells didn't actually
change.  That would be impossible to implement, and it's unnecessary anyway, as
long as the vast majority of them change. We've already formulated a drug that
finds the oldest form of DNA in the subject and reverts the subject to that form,
for just such an eventuality.  In fact..."

"Never mind," I interrupted.  "Right now, all I need is your cock."

I crossed the room and pushed MaryAnne (it felt really weird to realize that this
stud in front of my was my very feminine roommate.  After a few minutes, I didn't
care anymore, as her dick spurted it's first load onto my breasts.  As it
spurted, it began to lengthen, and I knew I had my revenge.

I continued to suck MaryAnne's cock, hardening it again, and rolling it around in my
mouth to induce another orgasm.  I noticed that the mostly depilitated hair
pattern she had had on her pussy had carried over to her dick.  It had a little
triangular bit of fluff over the very base of it, and the rest was shaved clean. 
I was kind of glad, thinking how this was the last dick I would ever suck, and I
really preferred them shaved.

MaryAnne came again in less than five minutes of oral stimulation.  I guessed that
MaryAnne had as little chance of controlling her masculine urges as I had had of
resisting my feminine ones.  I aimed her dick at my tits again, spurting it's
sperm where it would have the greatest effect, and went back to sucking her cock.

When I had it hard again, laid back on MaryAnne's bed and pulled her on top of me.
 I actually allowed her to kiss me, the first time I had been kissed on the mouth
by a man in my time as a woman.  I guessed that since it was actually a woman,
there was no problem.  Then I reached down to guide her inexpert but exuberant
prick into my pussy.

MaryAnne wasn't even as good of a fuck as ted, let alone Jon, but all I really
wanted was another load of cum, as well as to force her to have sex as the other
sex just like she had forced me.  If I had had more time I might have tried to
get her gang raped by a bunch of horny girls, but actually that might have been
too enjoyable for her, and in any case time was short.  I allowed her to cum in
my pussy, and then sucked her dick to another erection (it was bigger now, about
fourteen inches long, and throbbing with the same rhythm as my tingling tits) and
turned over onto my hands and knees, allowing MaryAnne to bang my asshole.  She
went to the work at hand with relish, but without subtlety.

When she had cum her fourth load, up into my asshole, I exerted all my force of
will and tore myself away from her cock. I got dressed and inserted the dildo and
vibrator into myself as I had before, finding to my good fortune that MaryAnne had
brought more, larger bras home for me, knowing that soon I would be too large for
even the unrealistically large sizes I already had.  I finally found myself
strapping on an O cup bra, thinking to myself that I now probably had the largest
tits in human history.  I then forced MaryAnne to get dressed in clothes borrowed
from Jon (ted's clothes were too tight in the crotch) and lead me back to her
laboratory.

We returned to her lab without incident.  On the way there, I was constantly
finding my thoughts drifting to MaryAnne's now eighteen-inch cock.  I changed my
mind.  I had originally intended to leave her as a man, but now I realized the
advantages that a beautiful woman who was completely under my control could bring
me.  I decided to have MaryAnne turn herself back into her old self, so I could
use her sexually like she had used me.

We entered the room where I had been strapped down during my transformation into
a woman, and MaryAnne immediately got out two doses of the antidote she had
described to me.  She administered the shots to each of us, assuring me that it
would work as quickly as the other shots had worked on her, earlier.  I lay down
on the cot in the center of the room, stripped, and closed my eyes, waiting to
open them as a man again.

I must have dozed off, because the next thing I knew I was waking up. I sat up,
immediately feeling disappointed.  The huge weight on my chest was still there. 
I saw MaryAnne sitting naked over in the corner of the room, and she at least was
back to her old self.

"What went wrong?" I asked.

"Nothing," she replied.  "We were both restored to our former genetic make-ups."

"Then why am I still a woman?" I asked.

"You're not," she said, pointing at my crotch.  I looked where she was pointing
to see that she was correct, between my legs was now the seven-inch cock I had
had before she kidnapped me and conducted her experiments on me.  It was
hairless, but I knew that hair would brow back.  In fact, I had enjoyed having a
hairless pussy so much, I might have considered the joys of a bald cock if I
hadn't been so enraged by my other bodily attributes.

"Then why the hell do I still have these?" I asked angrily, grabbing my still
humongous tits.

She didn't answer at first, she just guided me over to a full length mirror set
into the wall.  I looked at myself in the mirror, realizing that I was a strange
amalgamation of the man I had been born to be and the woman I had been turned
into.  I had a face that was almost my old one, but softened and feminized.  I
was also nearly my old height again, and I had a cock, but other than that my
build was entirely female.  My breasts looked only slightly smaller, but that was
explainable by the fact that they were now on a much larger frame.  My hips still
flared out so much as to make my waist look impossibly thin.  I turned around to
look at my perfect ass.

"Now you've done it," I nearly screamed, really starting to get angry now.  "I
can' even lead as normal a life as I did when I was a woman. I'm some kind of
she-male freak!  How come what happened to me didn't happen to you?  You don't
still have a huge cock growing out of your bush!"

"The same thing DID happen to me," she said, sounding a little hurt at my abuse. 
Her psyche had been altered by the drug so that she wanted to please me, and it
was very disturbing for her to be yelled at. "Look."

She spread her legs to show me her clitoris, inflamed to seven or eight times
it's normal size.

"The gender swapping was a genetic change," she said, "but the penis, hip and
breast growth was simply a rearrangement of fat molecules.  It CAN be undone, but
it takes a different drug."

She rummaged around in a cabinet full of syringes for a few minutes, coming up
with two syringes full of two different mixtures.

"This one," she said, injecting herself with the first syringe, "will restore
feminine attributes to its subject.  And this," injecting me, "will restore your
male ones."

I waited for something to happen.

"It's not working!" I exclaimed hotly after a few seconds.

"Of course not," she explained. "Like the drugs we both experienced before, it
needs sexual stimulation to have any effect."

With that, she pushed me down onto the cot and strapped my arms and legs down.  I
knew that this was not a real imprisonment, but just a sexual game for our
enjoyment, so I put up no resistance.

She climbed onto the table, kneeling between my legs.  I could actually see her
elongated clit hanging between her legs like some tiny dick, but most of my
vision was taken up by my huge mammaries. She snaked her way up onto my body and
started to lick them.

This was the first time I had had tits to be stimulated WITHOUT the overriding
horniness that had been triggered by my first transformation.  Before, I could
blame my enjoyment of my tits on the physical and mental changes that had been
forced on me.  Now, I had no such excuse.  I must admit, it felt just as good,
perhaps better, because I could concentrate on the sensations coming from my tits
and not have to worry about a powerful need to cum or ingest sperm.

MaryAnne was as expert as ever in manipulating my breasts, licking over the full
masses of them.  She scraped her teeth over them, nipping them gently, and sucked
the nipples completely into her mouth, pinching them also slightly with her
teeth.  I moaned in ecstasy.  She kneaded both my breasts in her hands while
sucking them each in turn. She buried her face between them, pushing them up like
earmuffs so that they almost enveloped her head.  She took both nipples between
the fingers of either hand, and suddenly pinched them tightly, rolling them back
and forth between her fingers.  That pitched me over the edge, and I came.  I
felt my cock spasm, cumming from the stimulation she had imposed on my breasts,
and I shot my first load of cum in a week.  It shot up and hit MaryAnne, and I
heard her give a little "oh!" of pleasure.

Suddenly, my breasts and hips began to tingle again, but differently from before.
 As I looked at them, they deflated slightly.  I looked up at MaryAnne to see her
kneeling between my legs, both her hands at her crotch pulling her cuntlips open
and exposing her clit.  As I watched, it retracted slowly, becoming not so
grossly out of proportion.  MaryAnne was reacting to my cum as I had earlier
reacted to hers.

That last statement was truer than I knew.  MaryAnne suddenly said to me "my tits
feel funny," and we looked at them to see them grow ever-so-slightly larger.  I
realized that my cock had been tingling, and looked down at it.  I wasn't sure,
but it looked slightly larger too.

In any case, there was nothing to be done about it now.  I flipped MaryAnne over
onto her back, the masculine strength starting to return to my arms, and inserted
my cock into her pussy.  I could still feel how my wide hips pushed her hips
extra far apart, and my gigantic tits still cascaded down onto her chest, but now
I was penetrating her with a real cock.  MaryAnne, for her part seemed to be
enjoying being fucked by a perverted she-male, as her hypertrophied clit was
pushing up noticeably against my hairless cock.

I reached around behind her to grab and spread her ass cheeks, pulling her cunt
onto my dick with my grip on her ass as leverage.  I strove to impale her upon my
shaft.  I was so entranced with again feeling the pleasure of entering a pussy
that I wanted to push myself completely up into it.

Eventually, though, I began to stroke in and out normally.  The mix of sensations
was what made this fuck so fantastic.  My dick was fucking a pussy just like it
always had, but I could feel MaryAnne's hands on my extra wide hips, and my
gigantic tits were constantly rubbing up against her smaller (but still very
large) ones.  The juxtaposition of feelings from my male sex life and my female
one, and particularly that they were my favorite sensations from each, drove me
wild.

Considering the tensions of the situation, and how horny we both were, it's not
surprising that I couldn't hold out for very long.  After ten minutes or so of
squatting between this beautiful girl's legs, fucking her as a she-male, I came. 
As we both watched, my tits and her clit again shrank somewhat.

I guided MaryAnne with my hands, flipping her over yet again so that she was on
her hands and knees.  I reached down between my legs and started to jack my dick
(yes, it was now noticeably bigger) to another erection.  Looking down between my
still huge tits (I estimated that they were now back down to L cups,) I saw my
hand jacking my shaft. It was an incredible turn on to see that big cock, so
incongruous with the rest of my body, which was so feminine.  I jacked myself off
for longer than was strictly necessary, enjoying the sensations and the arousing
visual effect it had on me.  Eventually, I pushed the giant head of my
well-lubricated cock up against MaryAnne's puckered asshole. With one thrust I
buried my cock completely up her ass.

The moan that forced itself past MaryAnne's lips, half pleasure and half pain, was
proof that I was butt-fucking her a little bit harder than she had intended. 
However, I was still a little bit enamoured or having my revenge on her, so I
crammed my large cock up her ass and fucked her as hard as I could.  My muscles
were standing out more, growing closer to their former size with every orgasm I
had, so I had even more strength with which to grasp her hips and pull her back
onto me, impaling her anus on my dick.

I stroked in and out of her asshole, enjoying the tightness I could feel there
that was so much more intense than in her pussy.  MaryAnne cried out more in
pleasure than in pain now, as her sphincters relaxed to take the length and width
of my cock into her tail more easily.  I was still assaulting her ass with quite
a lot of force, though, pushing her forward until she started to get closer and
closer to the table.  Finally, she was just lying there on her stomach, and I was
lying on top of her, my huge breasts rubbing and slipping around against her
sweaty back.  I forced my cock in and out of her ass, holding her cheeks apart as
she lay there limp, offering no resistance as I pummeled and fucked her ass.

I felt my orgasm grab me.  It felt like it was picking my up and wringing me dry.
 I thrust my cock as far as I could up into MaryAnne's ass as time seemed to slow
down.  I could feel seconds flowing past like hours as my orgasm began.  I could
not remember ever having a stronger one, as a woman or as a man.  It felt like
the very essence of my being was being squeezed out through the hole at the end
of my cock.

Finally, after an eternity in which my eyes squeezed shut and the whole world
seemed centered around my cock, I could feel the release. My cum shot from my
dick and up into MaryAnne's abdomen.  I could hear and feel her moan her pleasure,
and I felt my tits deflate slightly again as I collapsed on her back.

Well, it took all night and part of the next morning, but we finally got back to
our right shapes.  MaryAnne's clit was back to normal by the fifth fuck, but I
lost count of how many times I had to come before I was completely male again. 
The side effects on both of us were considerable.

I am now 6'4" tall, two inches taller than when this story started, and about
twenty pounds heavier, all of it muscle.  My dick is now twelve inches long (I'm
sure of that figure; MaryAnne measured it,) and I've got a bit more body hair,
except on my dick, which I now keep shaved bald.  I decided that I liked the
sensation.

MaryAnne's changes are in the other direction.  Her tits grew two cup sizes, she's
now a G cup, and her hips and ass filled out into a nice rounded package.  I
guess she's even more fuckable now than she was when I met her.

I decided to stay roommates with MaryAnne.  As I said before, it was a coed dorm on a
progressive university campus, and I enjoyed all the sex I got from her.  We
discovered that the growth effect on our sex organs was only temporary, but I
know if we ever WANT changes in our bodies, that can be accomplished.  Since I
drugged her, though, I'm also sure that MaryAnne wouldn't transform anyone without
my permission.

All in all, life is pretty good.  I'm doing all right in my classes, and planning
on majoring in biochemistry (I've got a great tutor.) I've been hanging out at
the bar a lot with the guys from the room next door, but I tell them I don't
believe their stories about MaryAnne's former roommate, some slutty girl with
breasts that were amazingly huge.

After all, shit like that can't be true, can it?

Copyright ©1998 by SIC