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In Your Sister - sex story


In Your Sister



Brother and sister are caught making out by their
single parent mom and are taught a lesson they won't
soon forget.
"ALL the way up in your little sister," Momma
insisted. Momma had caught the two of us "making out."
We weren't really fucking or anything like that, just
feeling each other up, and kissing, and stuff like
that. Momma caught us. Boy was she mad!

After yelling and screaming, calling Lori a slut, and
me even more unmentionable names, Momma finally calmed
down. Or at least, she seemed to. What she did next, I
still find hard to believe. At first, I figured that
Momma had cracked. You know, gone over the edge.
Loony-bin stuff. Well, I guess Momma cracked all
right. Cracked right out of her shell. Inside, Momma
is a very kinky lady, and I guess she had been holding
it back for years.

Anyway, once she realized what we were doing, Momma
decided (probably correctly) that no matter how much
she screamed and hollered, we probably wouldn't stop
sneaking around and playing with each other. So, she
decided that if we were going to play around, we might
as well do it right. In fact, that's what she told us.

"Huh?" I said. Lori's mouth was gaping too.

"I said, if you're going to fuck around with your
little sister, you might as well REALLY fuck her, and
do it right." I still couldn't believe what I was
hearing. My staid, prim, old-fashioned mother,
actually TELLING me to fuck my own sister? No way!

Momma had just started, however. "You're not on the
pill, are you?" she asked Lori.

"Momma!" You could tell by the tone, that my little
sister had never even thought of such a thing. I mean,
you don't go on the pill, unless you PLAN on being
fucked. Lori was still a virgin.

Momma semi-apologized, "Well, you never know. Some
kids get them from school, or the free-clinic. They
aren't allowed to notify parents any more, unless the
kids tell them to."

Momma looked at Lori even closer. "How long ago was
your last period?" she asked.

Lori thought a bit, then responded, "I dunno, about
two or three weeks ago. Somewhere in there."

"Good," said Momma. "Now why don't you two get
undressed, and do this properly."

"Steve," she said, turning to me, "if you're going to
fuck your little sister, you'll both be more
comfortable on the bed." Momma WANTED me to fuck my
sister?! I looked at Momma in astonishment.

Momma's face clouded up again. "NOW!" she said, making
us both jump. "I'd better see nothing but two naked
bodies in your bedroom Lori," she said emphatically,
"in two minutes, or you're both going to be sorry!"

If there's one thing about Momma (Or Daddy, for that
matter.) she doesn't threaten lightly. Lori and I were
moving before Momma finished her threat, shedding
clothes as we went. By the time Momma made her slower
way into my little sister's bedroom, we were both
naked as jaybirds, and sitting on the bed waiting.

Momma STILL looked annoyed.

"Well, what are you two waiting for?" she asked. "I
told you Steve, fuck your sister. What's the matter,
do I have to put it in for you?" she asked
sarcastically.

"B-but Momma!" wailed Lori. "We don't have any
condoms! That's why we were just feeling around."

Momma looked as if she were going to blow her top.
"Not in MY house, you don't," she exploded. "As I said
before, if you're gong to fuck, you're going to do it
right. Now get started, or get out!" Momma looked as
if she meant it.

Well, at 15, I sure wasn't ready to leave home, and if
I wasn't, my little 10 year old sister wasn't either.
We looked at each other and shrugged. Well, if that
was what Momma wanted, that's what she would get. If
my little sister had a baby, well Momma asked for it.

Somehow I knew that Momma would be overjoyed, if Lori
showed up with a big belly.

Lori lay on her back; and I put my cock inside her.
Yeah, just like that. No foreplay, no sucking cock, no
twiddling her twat. Just up and stick it in. After
all, that was what Momma wanted, wasn't it? Besides,
we had gotten hot and slippery enough, before Momma
caught us.

That, and the thought of actually fucking my little
sister, and getting her pregnant, with Momma's
permission yet, was unbelievably exciting.
(Permission? Hell, Momma was almost INSISTING that I
knock the kid up.)

As I said, I did it. I pushed my big cock up inside my
little sister's tight little hole, and gave her a
belly full of baby-juice. Lori only let out a little
squeak, when I slid through her hymen, then she was
grunting and moaning as though she had been fucking
for years.

As I mentioned before, I did it. The feel of the
little girl's tight little slit squeezing and clamping
on my already pre-cum leaking prick was too much.
After all, I hadn't really been inside a girl before,
let alone one as tight and horny as Lori. I made about
two big strokes, in about 10 seconds, and I lost it.

I pushed my cock up inside my little sister, and gave
her what she wanted: a bellyful of her own big
brother's incestuous sperm.

That's when Momma said those words at the beginning of
this story. "ALL the way up in your little sister,"
Momma insisted. I grunted, and did my best. Pushing up
as hard as I could, I did my best to plant as much of
my baby-making seed as far up in the little girl's
tight little belly as it would go.

Momma seemed to be satisfied. Once she had seen me do
my best to impregnate my 10 year old little sister,
she calmed down a lot. Momma made it clear to both of
us, that we could play around with each other all we
wanted, we could even use birth-control, when she
wasn't around, but not the pill.

She just insisted that if we WERE going to play
around, that at least once a month, we stopped
"playing," and did it right. Yeah, just what you
think.

From then on, Momma practically ignored the two of us,
and our almost constant sex-show. That is, unless we
made it TOO obvious, or invited her in to watch. Once
a month though, Momma insisted on watching the two of
us fuck. She always made sure that Lori was in the
middle of her period, and that we didn't use any
protection at all during that one time.

After the first time, Momma always insisted that my
little sister go to bed without washing up afterwards,
so that her big brother's sperm would have a chance to
soak in. Then, for a month, she would leave us alone.
Don't get me wrong, Momma didn't INSIST that I
impregnate my little sister.

She just insisted that if the two of us were going to
fool around, then at least once a month, we had to
take our chances that I MIGHT make a baby in my little
sister. There's no way that Lori and I were going to
stop fucking, once we started. Also, as you might
guess, and Momma probably planned; we figured that if
we were taking a chance part of the time, what
difference did it make the rest of the time. Except
for a few days at the beginning, we didn't use any
birth-control when Momma WASN'T watching either.

After a while, it got to be quite a kick, thinking I
was planting a baby in my cute little sister's flat
little tummy. It took longer than you might think.
Lori had just passed her 13th birthday, when she
finally missed her first period. By the time she was
14 though, we were already working on a little sister
for our son to fuck.

Well, as Momma said, "If you're going to do it, you
might as well do it right."

Keys: taboo incest

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