DISCLAIMER:- The following text is sexually explicit and contains depictions of sexual acts that have been classified by the surgeon general as potentially dangerous and unhealthy. You must be a broad minded adult to read the text, and you must not make this text available to minors or to any person who does not wish to view it. Unprotected sexual relations with unknown partners is hazardous and we urge the use of condoms and safe sex at all times.

About five months ago my husband and I shared a cabin
with my sister and her husband for a week.

On the first night we were there we all got very drunk
and started playing strip poker. This was unusual since
we are normally pretty conservative, but we were having
such a good time we just said, "Why not."

It took a some time but we all got down to just our
underwear and my brother in law actually ended up
losing the last hand and had to get naked, exposing his
wonderfully big cock for all to see.

I had always been a little curious about it since my
husband is only average size and from talking to my
sister I knew it must be bigger. My brother in law has
always had a reputation as a ladies man and has even
tried to flirt with me on several occasions.

I know he saw me staring at his penis, which made me
turn red and also saw him ogling my breasts, which are
somewhat bigger than my sisters. We giggled and talked
about it for a while as it was all completely innocent,
and then retired to our separate bedrooms to be with
our own spouses.

Well my husband needs about half a beer to get drunk
and he fell asleep within a few minutes after retiring
much to my disappointment. I was horny from all the sex
talked we'd been doing while playing strip poker and
because of my brother-in-law's big cock, and was really
annoyed that my husband had deserted me. I even tried
to masturbate, without success.

Finally I went to the kitchen for a snack, still in my
panties, and while I was bent over looking in the
fridge my brother-in-law came up behind me and put his
cock right up against my ass.

I jumped a foot, turned around to see naked. He put a
finger to his lips and went, "shhhhhhhhh."

My eyes were drawn to his penis hanging there. And
while I just stared at it he suddenly bent down and
kissed me on the lips.

It must have been the alcohol because for some reason I
responded and kissed him back not making a sound or
thinking about the consequences of what I was doing. I
was really surprised at myself for reacting this way
because I've never considered being with anyone other
than my husband, let alone my brother-in-law.

As we stood there in the darkness with our tongues
intertwined he reached up and started lightly caressing
my naked breast. I moaned in delight and touched his
penis in return, moving my hand along its length. At
that point I never imagined anything more would come of
it thinking what we were doing was still completely
harmless.

Suddenly, he stopped and pulled me along with him into
the living room and pushed me down onto the sofa.
Kneeling next to me I gasped as his hand ran across the
shiny silk of my panties and tightly cupped my pussy.

'Oh, God,' I thought, 'I'm so hot!'

His fingers slid up and down between the folds of my
cunt and my hips began to undulate slightly. 'So good,
so good, please don't stop, please, please!'

He reached under the waistband of my panties and found
that I was very wet, he began rubbing my clit in
circles until I was gasping for more. I can't remember
ever feeling so hot before and forbidden aspect of what
was going on, knowing what we were doing was wrong made
me even more excited. The fact that our spouses were
just on the other side of the hall made me hornier than
ever and I became lost in the sensations.

Before I realized what was happening he'd moved between
my legs, tugged my panties to one side, and had started
pushing his now very hard big cock into me.

When I realized he intended to fuck me right there and
then I was shocked and began to protest and tried to
push him off. I knew that this was going too far.

Unfortunately, I was very wet by then so when he
pressed the big head of his monster against my slick
opening he just sunk into me easily with a quick thrust
forward.

"Nooo!!" I tried to whisper in his ear, but I was
pinned under him against the couch. I just couldn't
stop him and froze as he continued pushing and working
himself in and out of me. Finally I felt his pubic bone
grind firmly against mine and realized his big cock was
completely buried inside me.

"Oh Laura -- I just want to feel myself inside you for
a minute -- Oh god you feel so good! Oh yeah!" he
whispered into my ear as he started thrusting into me
completely ignoring my protests.

At that point the feeling was just too good to stop him
as immense pleasure flowed between my legs as I had my
first orgasm. I was so turned on I couldn't protest any
more. I was finally getting what my body needed.

He was thrusting in and out of me and I realized I was
responding and fucking him back by rocking my hips and
pushing back up to meet each thrust. We fucked without
a sound until we got into a rocking rhythm that I can
only describe as incredible. It was a wonderful feeling
to have such a large cock inside me for the first time.
I came several more times within a few short few
minutes from our first contact and the orgasms were
just as intense as the first time.

I was dripping with perspiration beneath him almost
unable to breathe. Eventually his thrusts quickened and
I knew he was going to cum. Then he grabbed my hips and
his body stiffened, pushing firmly against my pubic
bone for maximum penetration. I reached up grabbing his
ass and closed my eyes.

Groaning softly, I felt his body shudder as he began
ejaculating his sperm inside me. It actually startled
me when he let go because I could feel his penis pulse
and then a strong spurt causing a pressure sensation
against my cervix.

Only then did I think about the fact that my husband
has always taken care of our birth control by wearing a
condom. I have never had to even think about it. To
make matters worse I was probably at the worst time in
my cycle and realized I could easily get pregnant by
our little affair. But it was too late.

I just froze, marveling at the feeling of what was
happening inside of me. Each time he spasmed I could
feel him release another flood deep into my belly
making my vagina immediately go slick with our mixed
fluids. It was indescribable. I couldn't believe there
was so much of it.

For a full thirty seconds I felt his pulses while he
grunted, pumping his load into my womb before finally
collapsing on top of me with his cock still buried deep
inside me.

As the waves subsided, I lay there in a dreamlike state
feeling the heat of his sperm spreading out into the
depths of my body. After a few more gentle thrusts he
stopped, panting rapidly from the exertion. Finally he
pulled his shrinking penis from me and it was over as
quickly as it had begun.

We kissed lightly and each slipped quietly back to our
rooms without a word.

As I carefully slipped back into bed next to my
sleeping husband I immediately started feeling guilty
about what I had just done and also realized I now had
a river of semen literally pouring from my open vagina
into my panties, running down the inside of my thighs
and puddling on the bed beneath my bottom.

My sister had mentioned to me when her husband
ejaculates he squirts a big load making quite a mess to
clean up afterwards. And boy was she right. Now I could
feel his wetness all over inside me and pouring from me
as I lay there and realized I had millions of another
man's sperm swimming inside my fertile tummy, perhaps
already starting a new life there that should have been
reserved for my husband.

My God, I'd just mated with my sister's husband at the
peak of my cycle without protection, what had I been
thinking! Even gravity in the position we were in bent
over the couch increased the odds of conception.

Needless to say I ended up crying myself to sleep that
night thinking about the possible outcome of our
foolishness.

The next morning I had to quickly change the sheets to
hide the evidence before my husband noticed.

Now five months later the only proof that these events
even happened is my bulging tummy, now very pregnant
with what I know is my brother-in-law's baby. I still
cannot believe that I did it. Whenever I see him now he
just pats my growing tummy and gives me a sly wink. He
knows I'm having his baby from that night and I think
he's actually proud of it since my sister is now
pregnant too.

The only thing I can do is hope our baby looks like my
husband. It would kill him if he knew that I'm really
pregnant by another man. I didn't mean for it to
happen, it just did.