Sister blackmails brother, who then impregnates sister and her best friend
By: Date: 2023.03.04. Categories: Just Incestuous Stories Tags: , , , , , , , , , , , ,

My name is Ashley and my best friend’s name is Sarah;
we’re both the same age (17 at the time this story
happened), and we’ve known each other since we were in
elementary school, so we seldom spent much time apart
as we grew up.

During the summer between our 10th and 11th grades,
though, I went on a long vacation with my family and
thus I didn’t see Sarah for about two months until
August of that year, just before school was about to
start. So you could say I was surprised when I finally
did drop by her house to go swimming before the summer
was over.

“Sarah, oh my God! Are you pregnant?”

“Well… yeah,” Sarah said, resting her hands on the
generous swelling of her belly.

“Oh my God, how did that happen -?”

I then lowered my voice and added, “I thought you said
you were a virgin!”

“Well, I was,” Sarah said, “but then I had this

That wasn’t TOO hard to imagine; Sarah was a pretty
redhead and – unlike me – had a nice pair of boobs, so
I could imagine her possibly getting herself knocked up
at a party or such. Myself, on the other hand, probably
not; I looked more like a boy with my flat chest and
short blond hair, and most boys weren’t all that
interested in me.

“Come up to my room,” Sarah added in her own whisper,
“and I’ll tell you what happened.”

Needless to say, I was beside myself with curiosity and
followed Sarah upstairs to her room, which was opposite
her parent’s room and down the hall from her 17-year
old brother Jacob’s room. Jacob happened to be in his
room as we passed, working out with weights, and seemed
a little embarrassed when he saw Sarah.

“Okay now,” Sarah said, once we were in her room,
“don’t dare tell anyone, but Jacob is the father.”

“Jacob!?!” I exclaimed. “No way!”

“SHHH!” Sarah said, putting a finger to her lips. “Yes

“Oh, man… girl, that is sick! With your own brother?”

“Well, like I said, it was an accident…”

“Like what, he slipped and fell in your hole?”

“Ashley, do you want to hear the story or what?”

“Yeah, yeah, I’m sorry. So how did it happen?”

Sarah then went on to tell me the sordid details while
changing out of her T-shirt and jeans and into a
turquoise bikini top and wrap (for later when we
planned to go swimming in her pool). Way back in April
when the weather started to warm up, Sarah couldn’t
resist going for a swim while her parents were at work
and (she thought) her brother was at baseball practice.

So figuring no one could see, she took off her swimsuit
and paddled around for a while until she heard a
strange sound coming from her brother’s room. She
immediately realized her brother was there, so she put
on her swimsuit, hurried upstairs and asked if he was
watching her. He claimed he wasn’t, but from the way
his voice was strained Sarah could tell something was
up; Jacob tried to keep her out of his room, but she
barged right in and found him with his cock stuck
through one of his barbell weights.

“No way! Seriously?”

“Seriously,” Sarah said; “but wait, it gets better…”

Since Jacob felt masturbation wasn’t manly – but he was
definitely turned on by his sister – he decided to try
fucking the hole in one of his 5-pound weights instead
(figuring that would be more manly I guess), but then
his erection got so big it got stuck.

“Seriously, it was HUGE,” Sarah said. “As big as your

I glanced at my forearm, which was slender, but

For a manly young man like Jacob, going to the hospital
with a 5-pound weight on his dick was even more
mortifying a prospect than being caught masturbating,
but Sarah was sympathetic. After pausing just long
enough to grab her camera and snap a picture (and freak
out Jacob), she told Jacob she would help him get his
dick loose if he promised to be her slave forever and
ever. I thought that sounded a bit harsh taking
advantage of her idiot brother like that, but Jacob
agreed and Sarah then proceeded to sit Jacob on his
bed, drop to her knees and give him a blowjob.

“No fucking way! Seriously?”

“Seriously. He actually started crying – because it was
really sensitive, I guess – but then he went off like
you wouldn’t believe. He squirted a huge gob in my
mouth – which was gross – then the rest squirted all
over my boobs and got me all sticky. But the swelling
did go down, and eventually we were able to get the
weight loose with a whole bunch of dish soap.”

“Damn, girl, you’re a total slut!”

“Well, it’s not like anybody knew…and it was pretty
sweet for a while. Since he was my slave, and I had the
picture well-hidden where he’d never find it, I made
him eat my pussy every day after school after that, and
I’d give him blowjobs too if he was really good and
made me cum. But then one day – after he finger-fucked
me and I was all stupid with cumming – he just climbed
on top of me and stuck his cock right inside me.”

I stared at Sarah, disbelieving. Indeed, if she weren’t
swollen up like a beachball I’d have sworn she was
shitting me.

“I told him to get off me,” Sarah continued, “or I’d
tell everyone about him jerking off, but he didn’t
care. He just started humping me, really fucking the
shit out of me, and he said he was going to knock me up
good for being such a bitch. I told him he BETTER not
cum in me – and tried to push him off me – but he just
held on tight and kept on fucking me until he came. I
could actually feel it – his cum squirting inside me –
and it ran all over my legs when he finally let me up.
I ran to the bathroom and tried to wash it out, but he
must have shot it really deep because he got me good
the very first time.”

“Damn, girl, that is fucking sick! Your own

Sarah shrugged.

“But still…”

“Still what?” Sarah asked.

“Well, I’m kinda jealous,” I admitted. “I’m still a
virgin and here you are all knocked up with your
brother’s kid.”

“Twins, actually. That’s why I’m so big.”

“Jesus Christ! Do your mom and dad know?”

“Are you kidding? I said it was some guy I met at a
party. From another school, forget his name, didn’t
get a good look at his face.”

“So did you ever do it again, after that first time?”

“Sometimes,” Sarah replied, “if Jacob was REALLY good.
After all, he couldn’t knock me up any more than I
already was.”

“But damn… you’re going to have your brother’s babies
here in…what…?”

“Four months,” Sarah said.


Sarah looked at me sympathetically, then moved over
next to the chair where I was sitting and sat on the

“So,” Sarah said, “would you like some cock too?”

I swear I felt my heart flip over in my chest. In fact
I did want some cock, and very badly, though I was too
nervous and freaked out to articulate that clearly. I
did manage to nod, though, and Sarah nodded back.

“I know you’re there, Jacob,” Sarah said to the door.
“You can come in now.”

Jacob, who was indeed there, obediently came around the

“Jacob,” Sarah said, “my little friend Ashley would
like to see your cock. Would you show it to her

“Jeez, Sis, do I have to…?”

“It’s that or have the whole school see your dick in a

“Okay, fine.”

Jacob then opened the fly of his jeans and revealed a
very healthy-looking penis – in fact the first penis
I’d ever seen in person – at least 5 inches long just
hanging there. I’ll admit I was a little afraid of it
at first – I mean a boy’s cock isn’t exactly pretty
with all those veins and pubic hair – but then I
realized Jacob wasn’t going to try anything unless I
was cool with it first; so I reached out to touch it,
tentatively, and he was fully hard within seconds of my
grabbing it by the base of the shaft. Maybe it wasn’t
as big as my forearm, but it must have been at least 7
inches long and then some; just holding it and feeling
it pulse – with those big heavy balls hanging down
beneath it – made me feel woozy.

Unlike Sarah, I hadn’t yet changed for the pool so I
was still in my green top, jeans and sneakers, but
Sarah soon had those off of me, and had Jacob naked
too. I felt very nervous, of course (and more than a
little self-conscious about my tiny titties and boyish
body), but Sarah soon convinced me that Jacob was
thoroughly under our control; plus since he still
disliked masturbating, he had a healthy load of cum
built up which he’d be motivated to get rid of.

You can probably guess what happened next; emboldened
and horny, I stroked Jacob’s cock (which was already
oozing precum) until it blasted all over me, then
enjoyed my first taste of a boy going down on me as he
expertly sucked on my virgin pussy until I came. Then
Sarah produced a condom and personally slid it down
over Jacob’s reinvigorated hard-on.

“Now you’d better not try to get Ashley pregnant,”
Sarah said to Jacob sternly, “or I’ll be VERY upset.

“Yes, Sarah,” Jacob said obediently.

Jacob then moved in between my legs and – as I watched
with my heart aflutter – he gently lowered his swollen
helmet into my tiny virgin hole. It did hurt, but Jacob
finally broke through my hymen, then started pushing
deeper inside me. His cock was really thick and hard –
stretching my inside muscles as it sank inside me – and
I was seriously stunned when I felt his helmet kissing
my cervix, and his balls on my ass.

“Oh -!” I gasped, looking Jacob in the eyes; “Jacob,
you’re really in me!”

Jacob replied with a smile, letting me savor his
thickness for a long moment, then finally started
fucking me. He started slow and gentle, then switched
to fucking me fast and furious – slapping my ass with
his balls – then changed up the pace at random so I
couldn’t tell what was coming next. Despite being
‘coerced’ by his sister, Jacob obviously enjoyed taking
my virginity, and I gasped with shock and surprise
whenever he locked eyes with mine, then rammed in deep
and ground his pubic bone against my cunny mound.

Sarah, in fact, had to remind me to breathe, but aside
from that it was paradise; once I got used to Jacob’s
size, his cock just slid up and down inside my creamy
hole like a piston in a chamber, and I trembled like a
little girl on Christmas morning when he made me cum
again, grinding my tiny clitoris between our pubic
bones and slapping my ass with his balls.

As for not getting me pregnant, though, I guess Jacob’s
cock had other ideas. His brain clearly registered that
Sarah had the capacity to blackmail him, but he was
thinking with his cock at the moment, and his cock’s
priority was obviously giving me a belly full of
babies. After fucking me to a third shuddering climax,
he let me rest a moment, then (while Sarah wasn’t
looking) he slipped the condom off his cock and plunked
his naked cock right back up inside me. I saw what he
did – and felt his stiffness fill me once again – but I
was so startled I couldn’t even gasp with surprise.

The danger made my heart race faster (‘OH MY GOD,’ I
thought, ‘HE’S GOING TO CUM INSIDE ME – !!!’), but all
I could do was just lay there, feeling his now-naked
penis smashing into me, slapping and slurping in my
tight, creamy hole. Then suddenly it happened: feeling
the sperm boiling up from his balls, Jacob rammed his
cock in as deep as it would go and then held it there,
pressing his cockhead into my cervix and squirting rope
after rope of his thick, creamy semen right into the
mouth of my womb. And believe it or not, I could
actually feel it – not just the pulsing of that
delicious cock inside me – but every hard pulse of
sperm as it thudded into the back of my pussy.

“Dude,” I gasped, after Jacob finally stopped thrusting
and lay still inside me, “did you cum in me?”

“I’m sorry, baby,” Jacob said; “you’re just so cute, I
couldn’t help myself…”

Only then did Sarah finally realize what had happened;
moving around to the end of the bed, she got an eyeful
of Jacob’s sperm oozing down the back of my ass,
overflowing the tightly-stretched mouth of my pussy.

“You BASTARD!” Sarah said. “What did I just tell you
about cumming in my friend!?”

“Um…that I shouldn’t…?”

“GODDAMN IT!” Sarah said, punching Jacob in the arm
with surprising force; “YOU FUCKING PRICK!”

Only then did Jacob finally pull out (uncorking a flow
of cum that promptly soaked my thighs, my ass, and the
bed beneath me), whereupon he then beat a hasty retreat
from the room with Sarah close behind, making various
hair-raising threats (such as threatening to hang him
by his balls, or cut off dick).

For my part, meanwhile, I was too stunned to do
anything but lie there for the moment, soaking in the
puddle of sperm beneath my ass; but then, with horror,
I remembered that my last period was exactly two weeks
earlier – making this the worst possible time to get a
bellyful of cum – and I had a sudden vision of a
hundred million wriggling tadpoles gang-mugging the
poor eggs almost certainly now lying ripe and
defenseless in my tummy.

When I finally could move, I put my clothes back on,
then found Sarah and told her not to worry about what
Jacob had done. I’d enjoyed my first fuck, and we only
did it the one time, so I probably wouldn’t get

But in fact I was wrong; not only did Jacob’s sperm mug
my eggs, but they mugged them royally and knocked me up

So here I am now four months along with a bulging tummy
already starting to show, and a best friend who’s just
about ready to pop with twins who are – weirdly enough
– the brother and sister of my daughter and two sons
(or at least that’s what the ultrasound says I’m going
to have).

Needless to say, it’s supremely embarrassing to waddle
to school and have everyone in school whisper about the
dumb cunt who got herself knocked up despite being too
homely to have a boyfriend, and sometimes I feel about
as bright as one of Jacob’s dumbbells when I realize
how stupid I was; like Sarah, though, I wasn’t
comfortable with the idea of getting an abortion so
that wasn’t in the picture.

Seeing as I’m still in high school and have enough
trouble just taking care of myself, I think I’ll
probably end up giving my brood up for adoption (which
is also Sarah’s plan), but I guess we’ll see about that

In the meantime, I know one thing for damn sure: I plan
to wring a whole lot of fucking out of Jacob before I
get too big for him to fuck!

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