Enigma 

When the schoolgirl left the room and went out onto the balcony, I
saw my chance. When I joined her, she was leaning on the railings,
sipping her drink and looking at the communal gardens below. I leaned
beside her, sipping my drink in companionable silence for a while
before speaking.

"You have incredibly beautiful ovaries."

She turned her head towards me and gave a wry smile. 

"Shit, this skirt must be way too short!"

"No, it's perfect."

For much of the evening I had been admiring her long, toned legs
with the occasional tantalising flash of white panties.

"I lost a bet with my sister and as a result I had to wear this
outfit. My sister is my evil twin. Or perhaps I'm the evil one. I'm
never quite sure."

"Your sister did a huge service to mankind."

"Most of mankind has been drooling at my legs all evening. You're
the first one with the balls to come and talk to me. What is your
outfit supposed to be?"

"I'm a pirate, only the hat was too hot and cumbersome, so I dumped
it somewhere."

"Where's your cutlass?"

"It's hidden down the front of my pantaloons. Perhaps I can give it
an airing later, and show you my swordsmanship."

"It must be well hidden. Is it worth waiting for?"

"Tell you what. This isn't the most exciting party I've ever been
to. Why don't we go somewhere a bit quieter and see what we can do
with my cutlass and your ovaries?"

"Well, I like the idea in principle, but as co-host I think it's
impolite not to suffer with the guests."

"Ouch, I didn't know it was your party. I guess my cutlass and your
ovaries are in for a quiet night after all."

The schoolgirl thought for a moment, then she leaned towards me and
kissed me on the lips. Her breath was sweet, with a faint taste of
alcohol. I took her head in my hands and responded enthusiastically,
parting my lips and probing with my tongue. She parted her lips too,
and we explored each other's mouths. At length she broke it off.

"The party will be winding down soon. We have an agreement with the
neighbours not to go on too late. Why don't you stick around and help
clear up, and just maybe you won't need a cab home tonight," she said.

"That's the best offer I've had all day. My name's Greg by the way."

"I'm Denise, and my sister's Diane. We're not identical twins -she's
the well-stacked blonde bride."

I had noticed the bride earlier that evening, but she wasn't really
my type. Men were swarming round her like bees round a honeypot,
whereas I had bagged the hidden nugget. Retrospectively I identified
facial similarities between the two.

"I don't think I've seen you before, but my sister is pretty liberal
with her invitations so there's always plenty of people I don't know
at these dos. Is there a Mrs Greg?" asked Denise.

"No, but I haven't interviewed all the suitable applicants yet. And
is there a Mr Denise?"

"Ditto. Since I'm the co-host, I guess I'd better go back and give
Diane some support. Catch you later!"

Denise turned and re-entered the party, giving me another flash of
white panties over pert buttocks. I stayed on the balcony for a
while, savouring the cool night air. Slowly people started to drift
away and I re-entered the party too, saying goodbyes to what few
people I knew. Eventually I was left alone with the bride, who had
started to clear up. There was a moment of awkwardness between us -
she was probably building up to ask why I was still there, and Denise
didn't seem to be around to vouch for me. In the nick of time, Denise
emerged from a bedroom.

"This one's mine, sis. Greg the pirate has promised me a display of
swordsmanship tonight," Denise staked her claim.

"Hmmm, not bad at all. I struck a blank tonight. I wish I'd have
worn that schoolgirl outfit."

The two girls put me in charge of collecting glasses and stacking
the dishwasher.

"So Greg, what do you do for a living?" asked Diane.

"I'm a finance director." Then in order to disabuse any wrong ideas,
I named the local children's charity I worked for. "The pay's lousy
and cooking the books only takes about one day a week of my time. The
rest of the time I go round keeping our charity shops well stocked
and serving behind the counter when the volunteers are sick or on
holiday. Occasionally I get to stick up for abused kids. The worst
part of the job is dealing with social services - they seem to have
an endless supply of self-serving politically-correct misanthropes
working for them. How about you?"

The question was aimed back at Diane, but Denise answered first.

"We're both teachers. I teach infants, angelic five-year-olds who
haven't been toilet-trained and only know how to eat with their
fingers"

"And I teach nine and ten-year-olds. The girls come to school
wearing bras and thongs, and the boys are always looking for an
opportunity to brush up against my boobs or look up my skirt," added
Diane.  

I look a tray of glasses into the kitchen and loaded them into the
dishwasher. When I returned, Denise was bending over to polish the
stains off a coffee table. Her skirt had ridden up, revealing that
she had discarded her panties. Nestling between her cute pair of orbs
was a beautiful shaven pussy. Was it a trick of the light or was it
glistening slightly? My cock leaped to erection, forming an
uncomfortable tent in the front of my pantaloons. Fortunately Denise
and Diane appeared not to notice as they continued the job of
clearing up. I collected and loaded the last few stray glasses.

Diane collected the last few paper plates into a black bin liner.
"I'm going downstairs to dump these in the bin, and I'll nip across
the road at the same time because we need milk for the morning."

"Dressed like that?" asked Denise. Diane was still wearing her
bridal outfit.

"I'll chuck a coat over it."

Diane disappeared into the other bedroom and returned wearing a
coat. She picked up the bin liner and disappeared out the front door.
Denise came over to me and seized my hard cock through my pantaloons.
It had been noticed!

"I can't wait," she growled throatily, "let's have a quickie while
she's out."  

"I don't have any condoms," I admitted.

"That's okay, I'm on the pill. Unless you've got any problems you
ought to warn me about."

"No, I'm clean."

I looked around the room for something the right height.

"Bend over the sofa," I ordered.

Denise leaned over the back of the sofa, and I flipped the skirt up
over her back. I slipped a finger between her labia and found she was
moist and ready. My pantaloons didn't have a fly so I pulled them,
together with my boxers, down to my thighs. I thrust straight in,
deep and hard. Denise gasped at my initial entry, then as I fucked
her hard and fast, moaned in time with my thrusts.

"Oh God, yes! I've been dreaming of this all evening."

It wasn't long before Denise reached her orgasm, her moans becoming
high-pitched and continuous as her cunt spasmed tightly round my
cock. My orgasm followed soon after. As I reached my point of no
return, I thrust in hard all the way and clenched my pc muscle,
leaving my cock to vainly spurt nothingness into Denise's cunt. After
my orgasm died away I resumed thrusting, and Denise responded with
more grateful moans. Suddenly we heard a key in the lock. Just in
time I withdrew from Denise, pulled up my boxers and pantaloons, and
flipped Denise's skirt back over her buttocks. I thought we'd got
away with it, but when I saw the flushed smile on Denise's face, I
knew that Diane had to realise what we'd been up to.

"I see you two have been busy," she commented with a wry smile. "I
can see pathways between the bedrooms and the kitchen, so the rest of
the clearing up can wait till tomorrow. I'm going to start the
dishwasher - does anyone want a nightcap?"

We sat there for a while drinking our coffees, discussing the other
guests at the party, identifying them by costume. It turned out none
of us knew more than a handful each - the invitations really had been
spread liberally. At last Diane yawned.

"I'm going to turn in, it's been a hard day. Sleep well!" With that,
Diane disappeared into her bedroom.

"Shall we? I seem to remember we have some unfinished business,"
said Denise, indicating towards her bedroom door.

The rooms were warm and I was rather looking forward to shedding
some clothes. I took Denise in my arms and I resumed the exploration
of Denise's mouth that I'd started earlier, this time tasting coffee
on her breath. Denise responded enthusiastically, exploring my mouth
and sucking my lips. Eventually we had to surface for air.

"You're a good kisser," said Denise, "but right now I want another
exhibition of your swordsmanship."

I unbuttoned Denise's blouse, and slipped it from her shoulders.
Leaning forwards, I kissed the warm swell of her breasts, while
reaching behind her and unfastening the clasp of her bra. Last was
the skirt, and Denise's clothes fell to an untidy heap on the floor,
leaving her naked before me. She allowed me a moment to feast my
eyes; the whole was entirely in keeping with legs I had studied
earlier - slim, well-toned, with small, firm breasts. 

Denise repaid the favour, gently unwrapping me from my clothes like
peeling a grape. She sank to her knees as she lowered my boxers and
pantaloons, sucking the head of my solid cock into her mouth. She
gave me a quizzical look as I gently pulled her to her feet, then she
understood what I wanted and lay down on her bed. I stepped out of my
boxers and pantaloons and joined her on the bed, kneeling above her
head and giving her a reassuring kiss. I moved my hands down to her
breasts and stroked them lightly. Denise sighed quietly with
pleasure. I rolled a hard nipple between my fingers, then sucked it
into my mouth, stroking the other breast harder than before. Denise
sighed again, louder this time.

"Oh God, that feels good. Harder, harder!"

I switched my attention to the other nipple, and started rubbing the
first breast quite firmly. The volume of Denise's sighs increased
with the strength of my rubbing.  I stopped playing with Denise's
nipples and concentrated on mauling both breasts violently. Denise's
sighs of pleasure became very loud, but I realised it was time to
move on when her breasts had turned bright red.

I kissed my way downwards until I reached Denise's pelvis. My cock
was within range of Denise's mouth and she sucked the head greedily.
There's something about a woman's gentle curves and smooth skin just
inside her hip that I find very erotic, and I kissed a circle just
inside Denise's hips and round her upper thighs, careful to avoid her
genitalia. Denise responded by pumping the shaft of my cock with one
hand, while massaging my balls gently with the other.  I couldn't
hold back for long but, as before, I clenched hard at the vital
moment, leaving my cock to throb futilely in Denise's mouth. Although
my cock stayed hard, Denise let it slip from her mouth.

"Are you faking your orgasms?" she demanded. "That's the second time
you've cum without any semen." 

"I'm multiply-orgasmic," I explained. "I clench my pc muscle when I
orgasm so nothing gets ejaculated and my cock stays hard. This way I
can fuck you straight away without having to wait to recover. It's
hard work but it's worth it because when I do allow myself to
ejaculate, it's mind-blowing."

I thrust my tongue between Denise's labia and aimed for her clit,
causing her to squeal. Denise sucked my cock back into her mouth and
teased it gently with her tongue to keep it hard. Denise's wetness
proved how aroused she was, and I sucked up her juices - they were
salty with a hint of an enigmatic something that I couldn't quite
place. I parted her labia with my fingers and circled her clit with
the tip of my tongue. Denise made strange noises as she tried to moan
with her mouth full. I teased her clit with my tongue and Denise
bucked her hips in appreciation - she was rapidly nearing orgasm. I
returned to circling her clit to prolong the moment, then I
lubricated a finger in her wetness and slipped it inside her. I
returned to her clit and tongued it again, and Denise involuntarily
let my cock slip from her mouth as she moaned loudly. I gave her clit
a playful nip with my teeth, and the moaning became high-pitched and
continuous as her orgasm spasmed around my penetrating finger. 

I switched round so that I was kneeling between Denise's legs, my
cock pointing where it wanted to go.

"En garde," I challenged. "Prepare to face my mighty cutlass!"

Denise merely giggled, so I thrust my cock deep into her wet cunt.

"Do your worst," she encouraged.

I fucked her hard and fast, and was rewarded by the recommencement
of her moans. We both reached orgasm quickly, I clamped down again
while Denise moaned continuously, her cunt trying in vain to milk the
seed from my spasming cock. Staying hard, I continued to fuck Denise,
alternating between three fast, deep stokes and six gentle strokes.
This time she took longer to reach orgasm, but when she came it
lasted longer than before. Again I aborted my ejaculation so my cock
stayed hard.

The warmth of the room and the effort had tired me, so I took a
breather and lay on my back next to Denise. Denise wasn't tired
though, and she knelt over my groin and lowered herself onto my cock.
This time Denise did the work, raising and lowering herself using her
thigh muscles. She wanted a another hard, fast fuck and she adopted a
vigorous tempo. We both came at the same time, and again I aborted my
ejaculation. Panting hard with the effort, Denise continued to fuck
my cock, but with a slower, more measured tempo. I took advantage of
my free hands to maul Denise's still pinkish breasts, and she moaned
her appreciation. Her next orgasm was much gentler but more drawn-
out, accompanied by quieter high-pitched moaning.

Denise collapsed onto the bed beside me. She too was exhausted by
the effort in the warm room, and beads of sweat were breaking out on
her skin. I rolled her gently on her side then entered her from
behind in the spoons position, my belly against her firm buttocks. I
fucked her very languidly, with very slow deep strokes, and her next
orgasm arrived almost unannounced. The gentle spasms of her cunt were
enough bring me back to the precipice, and again I aborted my
ejaculation as my cock throbbed inside her. Still hard, and
revitalised after my rest, I upped the tempo and started to fuck
Denise harder and faster. I could feel her hand simultaneously
rubbing her clit, and I reached round and  mauled her breasts again.
This time her orgasm was noisy and dramatic, more like a squeal than
a moan.

I was nearly drained of energy, but I thought I had enough left for
one more orgasm. I rolled Denise onto her back and knelt between her
legs, penetrating her again from above. I thrust hard and fast, but I
slowly realised that I might have overdone it and I felt my cock
start to lose some of its hardness. Denise came to my rescue. She
moistened a finger and punctured my anus with it, searching out my
prostate and massaging it. Suddenly my cock felt like a baseball bat,
and I was able to thrust away with renewed vigour. We both came at
the same time and this time there was no question of my being able to
hold back, even if I had wanted to. My cock continued to spasm inside
Denise's cunt long after my supply of semen had run out. After what
seemed like eternity, my cock started to shrink and Denise removed
her finger from my prostate. Even in its flaccid state, my cock
continued to produce an occasional spasm for several more minutes.

Denise and I were both exhausted. I was desperate not to fall asleep
immediately, so I stayed between Denise's legs, sucking up the salty
droplets from her body. When I was sure Denise was asleep, I lay down
beside her and allowed myself to drift off with my arms wrapped
around her.

*****

When I woke up next morning I was alone. I felt very uncomfortable
and the bed linen was sticking to my back. We must have made quite a
mess, what with all the sweat and juices. My pirate outfit had been
neatly folded and placed on a chair, with a clean towel and bathrobe
on top. I gratefully took up the implied invitation and had a shower,
then wearing only the bathrobe I went in search of my hosts. I found
Denise and Diane, also clad in bathrobes, in the kitchen drinking
coffee. I gave Denise a quick good-morning peck on the lips.

"I'm glad I don't have to go to school today," said Denise. "I can
just imagine one of the kids asking why I was walking funny."

"That was one hell of a session you two had last night. I thought
you'd never let me get to sleep," said Diane.

"I'm sorry sis," apologised Denise.

"I'm only joking. It's usually me keeping Denise awake," Diane
explained to me.

"Thanks for the towel and the robe," I interjected.

"That was Diane's suggestion. This is something of a first for me,"
replied Denise. "Anyway, I'm being a bad host here. What do you want
for breakfast?"

"Just a coffee, then I'd better get going. I don't want to intrude."

" No way. You're not leaving here until you commit to a rematch,"
insisted Denise. "I'll cook you a full English breakfast."

"Wow, you're really into him sis," said Diane, with an air of
surprise.

"Every bit of me aches, I can barely walk, and I can't bear anything
touching my breasts but it's worth it. Greg has multiple orgasms. I'm
tempted not to let him leave at all, and keep him here as my sex
slave." 

"Multiple orgasms? How does that work?" asked Diane curiously.

"Just as I'm about to ejaculate, I clench my pc muscle very hard. I
have a dry orgasm and my cock stays hard," I explained.

Denise cooked a full English breakfast for me and I wolfed it down.
I was hungrier than I realised after all the effort I had expended
the previous night. Diane and Denise whispered to each other from
time to time. While I was washing down breakfast with a coffee, they
joined heads yet again.

"If you two are conspiring to incarcerate me here as Denise's sex
slave, I might not resist too hard."

Both girls adopted a slightly concerned look. It was Denise who
admitted what they'd being whispering about.

"Much as I'd love to, I'm too sore down below to have sex with you
today. Diane has never been with a multiply orgasmic man. We were
wondering if you, just as a one-off, would be prepared to give her a
practical demonstration."

I was shocked. I looked at both girl's faces, looking particularly
at Denise for any hint of jealousy, but she seemed sincere. Heck, I
might just be fucking a future sister-in-law. My cock had made its
own mind up, and my erection had forced its way out from under the
bathrobe. Again I looked Denise in the eyes.

"Are you absolutely sure about this?"

"Diane and I share everything, only the question of sharing men has
never arisen before. I want you to do this," she replied.

"I've had a lot of boyfriends, but they've all been bums not worthy
of Denise. I've been only too relieved to kick them out in the
morning. Don't worry, I'm clean, I always insist on condoms,"
confessed Diane.

"I don't have any condoms," I admitted.

"Don't worry, you're a nice guy and Denise has vouched for you."

That seemed very naive to me, but the I had been naive too. I looked
Denise in the eyes again, and she gave a little nod of the head.

"Okay, you're on. But don't expect a repeat of last night. That was
exhausting for me too."

A look of triumph broke out on Diane's face. She reached out and
grabbed my exposed cock and used it to pull me towards her bedroom.
Inside we shucked our bathrobes and Diane lay back on her bed. She
had a much more voluptuous figure than Denise. Diane too had shaved
her pussy but the odd stray hair showed that blonde was not her
natural colour.

I knelt between Diane's legs and parted her labia. Despite her
keenness to try me out, she was dry and her clit was hidden, showing
her lack of arousal. It was a good thing I hadn't tried to penetrate
her immediately. I moistened a couple of fingers and inserted them
into her cunt, gently finger-fucking her while applying pressure to
the front wall of her vagina. Gradually Diane became moist, and her
clit appeared out of its hiding place. I lowered my mouth and
attacked the clit with my tongue. Diane tasted differently to Denise -
stronger and slightly bitter. Although it wasn't unpleasant, I knew
which sister I preferred. Whereas Denise was a moaner, Diane was a
squealer. At first barely audible, the volume increased with her
arousal as my tongue continued to minister to her clit. When I judged
she was near to cumming I thrust hard and deep with my fingers and
was rewarded by the loudest squeal yet while her cunt spasmed in
orgasm round my fingers.

Diane was now very wet, and I thrust in deep with my cock. I fucked
her hard and fast, intending to bring her to orgasm again quickly.
Using all her experience, Diane used her cunt muscles to milk my
cock, trying to suck me to orgasm. We came at the same time, Diane
emitting another loud squeal, while I clenched hard to prevent
ejaculation. Staying hard, I continued to thrust into Diane, but
slowly and deliberately, giving a little upwards push at the end of
each thrust in order to give her clit a little butt. My aim was to
increase her arousal at every thrust by the smallest increment
possible. Diane lay back passively as I worked away, her involuntary
squeals slowly increasing in volume. I was tiring and considering a
change of tactics when Diane finally reached orgasm, but when it
arrived it was very different - rather than violent spasms round my
cock, I felt a light fluttering which seemed to go on and on forever.

Exhausted, I dismounted and lay on my back beside Diane.

"If you want more, you'll have to do the work," I warned her.

Diane knelt astride me and slid down onto my cock. In control of the
rhythm and depth of penetration, she chose another hard fast fuck,
using her internal muscles to milk me again. Again we came at the
same time, and again I clenched hard to prevent ejaculation. Diane
took a breather, sitting on my still hard cock, her juices matting my
pubic hair. I was exhausted and afraid of losing my arousal.

"Do you mind if I invite Denise to join us?" I asked Diane.

"No, that's okay," Diane replied, but I could tell she wasn't too
happy about it.

I called to Denise, and she opened the bedroom door to the sight of
Diane still astride my hard cock. I stuck out my tongue and wiggled
it at her. Denise got the message and came and squatted over my head.
I parted her labia, and explored inside with my tongue. She was very
wet and her clit was begging for attention so she must have been very
turned on by the sounds from the bedroom. I still couldn't place that
enigmatic taste.

Diane restarted her fucking, raising and lowering herself on my
cock. She was tired now and the rhythm was slower than before. I was
turned on by the sight of Denise's body above me, including her
bruised breasts, and I found the energy to lift my hips off the bed
and thrust up to meet Diane as she lowered herself. I teased Denise's
clit with my tongue, and savoured the low moans of response. I
wondered what the neighbours would think of the sound of both sisters
in orgasm. Denise came first, with her high-pitched continuous moan,
and Diane came soon after with a squeal, despite a much weaker orgasm
than before. Diane dismounted, and collapsed on the bed beside us.

"God, that was awesome. That was to die for. Excuse me, I need the
bathroom."

Diane left us alone in the bedroom. Denise looked at my still-hard
cock.

"You haven't let yourself ejaculate yet, have you?" she asked.

"Somehow it didn't feel right," I replied.

"Let me take care of that for you."

"Do you want me to clean up first?" I asked, aware of the chill of
her sister's glistening juices as they slowly dried on my cock.

"And risk wasting such a deserving erection?"

"Have you ever done it with your sister?"

"No, although I suppose we could try it if you wanted us to.  You
have every right to ask us to, after what we've put you through. "

"That's okay, I'm very happy with what I'm about to get," I replied,
and from the smile on Denise's mouth before it enveloped the head of
my cock, I had made the right answer.

Denise sucked away, and pumped the shaft of my cock with her hand,
and I knew I wasn't going to last very long. Then Denise started
simultaneously licking the underside of my shaft and rhythmically
squeezing my balls and I was lost, my cock pumping my semen deep into
Denise's mouth. As before, my orgasm lasted for ages, my cock
spasming long after there was any semen left for it to ejaculate, but
Denise continued to pump and suck my shrinking cock to extract every
last drop of semen. Finally satisfied, Denise released my flaccid
cock and smiled to show that she had swallowed everything.

"Thank you," I said, with an equally satisfied smile on my face.
Somehow, anything more was unnecessary.

*****

None of us had any plans for the day, so the two girls kept me a
willing prisoner. We lounged around in our bath-robes, watched
romantic DVDs and ordered take-aways. Occasionally Denise would suck
my cock or I would suck her clit with Diane averting her eyes. At the
end of the day, when I was finally released, I exchanged phone
numbers and e-mail addresses with both sisters, but I was only really
looking forward to seeing Denise again. I thought about her during
the cab ride home, still trying to work out that enigmatic taste.
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