Sister's Trick

"But I CAN'T have sex with my own Brother!" Marcia's

objection SOUNDED reasonable enough . . . unless you knew that

the four of us were stark-naked, and had been "fooling around"

with each other for over two hours. Both Marcia and I had sucked

BOTH guys off twice in that time; never bothering to even care if

the guy's prick squirting thick white baby-juice against our

tonsils was our sibling's, or our boyfriend's. The four of us

have been getting into and out of trouble together for longer

than I can remember. Once we reached puberty though, things had

rapidly progressed from just kisses and hugs, to our present

involvement, where nothing was off-base except doing "the real

thing", and Mike and I were working to remove that last barrier.

Marcia always was the naive one of the group though, and I

figured it was up to me to get the little girl ALL the way into

what Mike and I had started about a week ago, when it was too

snowy to leave the house. Only I planned on a little "surprise"

for Marcia that she didn't expect.

For once, my cute little cousin would be FIRST in doing

something, instead of me. Only she just didn't know it yet.

Even Dan was in on it, though it had taken the threat of watching

me and Mike "get it on", while he only got to watch, to bring him

around. Still, I had only sucked him off twice since then;

telling him he wasn't fucking ME, until he did it "properly" with

his little sister. I guess seeing Mike's prick sliding up in my

seemingly bare cunny; squeezing on my brother's prick like no

hand or even mouth COULD do, convinced him.

"Why not?" asked Dan. "Mike and Sherry do!"

Marcia didn't even bother to look at us to see if we agreed

with her brother. I guess she knew the ring of truth when she

heard it. Besides, it sounded just like something we WOULD do

(and had too).

Abandoning THAT line of defense, our little cousin blurted

out the thing that really bothered her "But what if I get

pregnant?" she almost wailed; seeming to be more worried about

NOT being able to have sex with her big brother, like I was, than

at the prospect of having his baby in her belly. "I mean I just

CAN'T get pregnant by my own brother, can I? Mom and Dad would

just KILL me." Here Marcia looked hopefully at Mike and me, as

if we might have a solution for her problem, since WE seemed to

not be bothered by the prospect of an impeding swollen belly with

Mike's baby kicking and squirming inside me. We did.

"Here," I said, holding out the box of a dozen condoms that

Mike and I had spent the day preparing. (We had spoiled three of

them, but both agreed it looked like we had been using them

ourselves that way.) "Use these. I'll put one on Dan, while you

lie back and get ready, OK?"

"Are you SURE it's OK?" whimpered Marcia; obediently lying

back, and spreading her legs. "Mom would just KILL me, if she

found out I let my own brother get me pregnant."

Even Dan shivered a little; but we had already discussed

this. If (when) Marcia showed up with her big brother's baby in

her tummy, Mike was going to say it was him who "got her in

trouble" . . . just like Dan would do if Mike and I slipped up

(fat chance).

"See," I said; rolling the latex sleeve down my boyfriend's

swollen prick, "these new condoms are so tough you could drive a

nail through them, and they wouldn't split." The very reason we

had chosen THEM, over the more "sensitive" latex kind. Mike and

I had spent the afternoon yesterday using a leather-punch to

punch a tiny circular hole in the tip of each one, before sealing

it back in the foil with a heated wire. The tiny hole was almost

invisible, but when we tried them, the holes matched up almost

perfectly with the piss-slit on Mike's (or in this case Dan's)

prick. When Dan ejaculated his seed in his little sister's

belly, almost every drop would squirt right THROUGH the condom,

and into the girl's vagina where it belonged.

"See," I said; holding Dan's prick up, so my fingertip hid

the end (not that the tiny hole would be visible, unless you were

looking for it), "now you don't have to worry about a thing."

Yeah, right . . . except what size dress she was going to wear in

about six months or so. <Giggle.>

If it sounds like I'm a really NASTY person, setting up my

little 15-year-old cousin to be knocked-up by her own big

brother, I'm not. Marcia and I have been friends for YEARS, and

have always pulled little pranks on each other. Heck, I wouldn't

have been all THAT annoyed, if I found out she had pulled a joke

like this on ME. I mean, the thought of carrying my own

brother's baby in my tummy wasn't all THAT bad; even though I

planned on marrying Dan as soon as we could, that is. So I knew

Marcia wouldn't be THAT mad at me, if she found HER brother's

baby stretching her belly, just like I wouldn't be at her if I

did.

It wasn't until Dan actually slid his condom-covered prick

home in my cousin's belly though, that I knew we were home free.

By the time Dan has used up the eight or nine specially prepared

condoms, it would be all over except the cry of the baby, and the

celebration after my cousin gives birth to her own niece or

nephew.

Sure enough, when Dan pulled out, after shuddering and

groaning on top of his sister for several minutes, very little

sperm was trapped inside. Almost every drop of the boy's potent

seed was planted firmly inside his little sister's cute belly

where it belonged.

Afterwards, Mike and I put on a show of him fucking me, with

NO condom stealing any of his sperm from getting inside me.

"Oh my God," croaked Marcia, once she saw my big brother's

bare prick sliding up inside me. "You're going to get pregnant,

if you don't watch out."

"That's the idea," I groaned, as my orgasm overtook me. I

might know about the diaphragm tucked away neatly in my vagina,

where my cousins couldn't see it, but that didn't mean the idea

wasn't as erotic to me, as it obviously was to them, by the

sudden resurrection of Dan's prick, and the highly erect nipples

on Marcia's titties.

"That's the idea," agreed Mike, as my brother jammed his

thick prick to the root in my belly, before sending flood after

flood of incestuous cum squirting inside me. We could tell that

both of our cousins were fascinated by the sight of his sperm

leaking out of what THEY thought was my unprotected sex. Before

Mike even finished cumming in me, Dan and Marcia were one big

nasty themselves, as my boyfriend jammed his now bare prick to

the root in his little sister's belly. My little act it seems,

had worked out better than I even hoped.

"God, I can't wait to see Sherry's tummy get big," groaned

Marcia, as her big brother's movements became erratic, and he

began filling the little girl's womb with incestuous seed . . .

this time without even a holey condom to get in the way of his

sperm wriggling its way up inside her; looking for an egg to

fertilize.

"Well, it'll probably be a pretty long wait," I giggled, as

I snuggled up to Mike, while his thick prick slowly wilted inside

me. The feel of my own brother's lusty seed inside my vagina was

SO comforting. "I've at least got a diaphragm in my vagina,

unlike some girls I know who fuck their brothers bareback, and

don't even check their condoms for holes when they do use them."

"Um," said Marcia . . . smiling at me MUCH too pleasantly

for a girl who's just had a fast one pulled on her. "Have you

checked YOUR diaphragm for holes lately?" she asked sweetly. "I

did mine."

.......Oh shit.