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                 K R I S T E N' S    C O L L E C T I O N
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Familiarity Breeds Sister
by Beating Off Bob (beatingoffbob@yahoo.com)

***

Beth Ann cannot understand why her twin brother 
masturbates incessantly. When he finds out she's never 
rubbed her virgin pussy, he helps her understand what 
the attraction is. (MF-teens, inc, 1st, mast, preg)

***

Beth Ann sighed and wiped the long counter of the 
Hamilton Dry Goods store. Jake, her brother, was doing 
it again. He was in the back room jacking off, while 
she stayed out front tending the counter, not three 
feet away. As she wiped the counter, probably for the 
ten thousandth time, she could hear the rhythmic slap 
of his hand on his big angry looking boner - also 
probably for the ten thousandth time, she thought 
glumly.

Would you hurry up, you pervert?" she hissed through 
the saloon doors that went to the back room. "I've got 
to pee!"

"Well then" he panted. "Go ahead and pee."

"You know I can't leave the front unattended. Aunt June 
would have a fit if somebody came in and there wasn't a 
Hamilton right there to do their every bidding."

Beth Ann and Jake lived with their elderly Aunt and had 
for the last ten years, ever since their parents were 
killed in an accident. Aunt June was the only family 
they had and, while she'd felt it was her duty to take 
them in, she was also glad for the help they gave her 
in running her store. The fact that the store was out 
in the middle of Catlin County, thirty miles from just 
about anywhere, didn't mean business was slow. After 
all, everybody living within ten miles was also twenty 
miles from just about anywhere. 

So there was a fairly constant stream of folks coming 
in and out. But to make any real money, the store 
needed to be open about sixteen hours a day. Aunt June 
handled things from morning until suppertime, but after 
that Beth Ann and Jake looked after things until it was 
time to close. 

At least that's what they'd been doing ever since 
they'd turned twelve. At first it had been a wild 
adventure for the twins - being in charge of a whole 
store - but four years later Beth Ann felt like she 
could go anywhere in the place and find anything they 
sold blindfolded, and hopping on one leg.

Beth Ann heard the combination sigh and groan she also 
knew very well. Jake was cumming, squirting two or 
three long white ropes of semen out of his penis and 
into a tissue. Her nose caught the unique scent of his 
sexual fluid. That too was a smell she knew well. She 
wondered if all boys did that constantly, like her 
brother seemed to. 

She thought back to the first time she'd seen him doing 
it.

Beth Ann had gone out to the storage shed to find a 
case of number six nails and was lugging it back into 
the back door of the store. She had the heavy box 
balanced on her shoulder, so she had a hand free to 
open the door. She knew Jake wouldn't be able to hear 
her from up front if she knocked, and that's where Jake 
was. Or at least that's where he was supposed to be. 

But he wasn't. 

Instead, as she walked up the dim hallway toward the 
front of the store, she saw Jake standing just inside 
the saloon doors, peeking out into the front room. His 
pants were on the floor in a puddle around his ankles. 
His hand was moving in what would be his lap, if he was 
sitting. Beth Ann hadn't understood at first. 

"Jake? What are you doing?"

He'd turned and she'd seen clearly just what he was 
doing. They'd been thirteen at the time, and she'd 
known about reproduction and all that, but she'd never 
seen an erect penis until then. 

Her brother's was, unknown to her, a prime example of a 
man's cock. It was about eight inches long, with a 
slight bend up and to the left. He was uncircumcised, 
which meant he didn't need any lubrication to jack off, 
and could do it anywhere, any time. Being a teenager, 
he could produce several ounces of semen several times 
a day. He'd learned how to get that semen out of his 
balls while taking a bath when he was twelve, and had 
been doing that just about every day since then. 
Especially when he saw Janet Thompson, who had just 
been in the store, buying the last of the number six 
nails for her father.

Of course Beth Ann didn't know all that at that time. 
All she'd known was that her brother had his hand on a 
very stiff penis and was slicking it back and forth in 
an almost professional manner. 

Or had been. 

When she announced her presence he'd jumped, then bent 
down and pulled his pants back up as quick as he could. 
He'd stammered out something about "Just having to". 
Beth Ann had been pretty much speechless for half an 
hour, but eventually she'd confronted him about it. As 
they'd always been pretty close, Jake was actually able 
to explain about Janet, and what she always did to him, 
and how he relieved the pressure. Beth Ann knew what 
that feeling was like. There was one boy at school who, 
whenever he talked to her, made her stomach feel funny 
in a way that she just couldn't make go away.

But she'd never masturbated. She didn't even know how 
to begin.

In the years that had followed that incident, Beth Ann 
had begun to notice how girls affected her brother. If 
a pretty girl came into the store Beth Ann would 
surreptitiously peek at the front of her brother's 
trousers. More often than not a bulge would appear, 
like magic. And, when the girl had left, Jake would 
think up some reason why he had to go into the back 
room, or out to the storage shed, or to the bathroom. 
She couldn't go spy on him, because someone always had 
to be at the counter, but she was pretty sure she knew 
what he was doing. He was always in a great mood when 
he came back, with a big smile on his face.

It just wasn't fair. He got all the fun, while she just 
got frustrated. She didn't have a nice hard penis to 
play with. It had never occurred to her to explore her 
own body, to find out what might feel nice.

Things had progressed one warm evening when they were 
fifteen. Sandra Jones had come slinking into the store 
wearing a dress so old you could almost see through it, 
and had asked for a twenty-four inch zipper for her 
mother. Jake had told her that he thought there might 
be one in a box up in the attic and he'd have to show 
her. It wasn't until after they'd climbed up the fold 
down ladder to the loft that Beth Ann had suddenly 
realized Jake hadn't been up in the attic for over a 
year, and wouldn't have noticed anything at all about 
sewing notions even if he had. AND, he'd had another of 
those boners of his as he led Sandra to the stairs. 
Jake was doing something up there with Sandra, and Beth 
Ann wanted to know what.

So she peeked. She quietly climbed up the ladder and 
carefully raised her head into the open space above. 
She almost fell off the ladder when she realized what 
she was seeing. Sandra was lying on the floor, the 
dress up around her stomach. Her legs were spread and 
Jake was between them. His pants were down around his 
ankles again and his pale white butt was bobbing up and 
down while Sandra sighed with pleasure. In the shaft of 
light coming through a dusty window, Beth Ann could see 
his stiff penis sliding in and out of Sandra's pussy. 
Her own pussy clenched as she stifled a gasp and she 
ducked her head back down instantly. He was FUCKING 
her! Right there in the store!

Beth Ann found she was panting, her breasts heaving 
like she'd run a mile. How could he do that right here 
in the store? And why would Sandra let him do that at 
all? 

Maybe he was raping her! Maybe she needed help! 

Beth Ann peeked back over the edge of the floor. Sandra 
was making noise... moaning... was that pain? Beth Ann 
examined the way Sandra was lying. Her legs were out 
flung, giving Jake plenty of room. Her arms were around 
him, not pushing him away. Suddenly Sandra began 
thrusting her pussy up at Jake as he pounded into her. 
She was chanting "Yeah .. yeah .. yeah... OH YEAH!" 

Well, it obviously wasn't rape. 

Then Jake started making noises too! He said "You're 
snapping your pussy Sandy, I'm gonna cum Sandy... here 
it comes, baby... OH YEAH!" He stuck his peter in her 
all the way one last time and Beth Ann saw his ass 
cheeks clench. He pulled his prick out a little and 
slammed it back in, grunting. But while it was out, 
Beth Ann saw that his dick was coated with streaks of 
white and she knew it was his sperm. 

He was shooting his sperm into Sandra O'Conner! She 
might even get PREGNANT!

Beth Ann climbed back down the ladder and went to the 
counter. Her pussy was hot and itchy. There was an ache 
in her stomach, not like she was sick, but like she was 
hungry or something. But she wasn't hungry. Between her 
legs felt... wet. That had never happened before. She 
didn't know what to do about it. She felt nervous and 
jumpy too. 

About then she heard noises of feet coming down the 
stairs. She made herself busy so she wouldn't have to 
look Sandra in the eye. When Sandra and Jake came back 
into the room he said something lame about how since 
they hadn't found what she needed that they'd have to 
order it in. She giggled and said to give her a call 
when it got here and she'd run right over to get it. 

She'd confronted her brother after Sandra had left the 
store. A shouting match had ensued but Beth Ann ended 
it by saying that if he ever did anything like that 
again in the store she'd tell their Aunt. Jake had 
clamped his mouth shut, but later he whined and moaned 
that he'd get the blue balls if he couldn't do 
something to get some relief. In the end he'd gotten 
her to agree that he could go in the back room to jerk 
off when he needed to, as long as he didn't take too 
long.

Beth Ann had thought that he'd be too inhibited to do 
it very often. She was wrong. Jake could whack off six 
or seven times a day if he wanted to. And since it was 
his sister who'd stopped him from having REAL fun he 
didn't care if his sister saw him or not while he was 
spanking his monkey. As time went on he even quit 
trying to be private about it, standing in plain sight 
as he jerked on his hot meat until it spat streams of 
semen up into the air. 

When Beth Ann complained that he was making messes on 
the floor, he started shooting into a tissue again. As 
time went on, Jake not only didn't mind if his sister 
saw him, it made him even more horny to know a female 
was looking at his dick. So he ended up standing right 
inside the saloon doors so that if Beth Ann went in 
there she couldn't help but see him. 

He thought it was funny. She was even more disgusted.

Things went along that way until Beth Ann refined her 
interest in boys. When Roger Dalton asked her to a 
school dance, and pushed her into a corner where he 
commenced to kiss her until she pushed him away, she 
found herself feeling exactly the same way she had felt 
when she saw Jake and Sandra fucking. 

Was that what Roger wanted to do with her? She let him 
kiss her some more, but when his hand cupped her breast 
she pushed him away again and went back out in the 
light, where people could see her. But every time she 
danced close to him after that, her stomach did flip 
flops.

The next day was Saturday, and Beth Ann slept late. She 
wouldn't have to take over the store until four that 
afternoon, so she could do whatever she wanted until 
then. She thought back to the dance, and the feel of 
Roger's lips on hers, and his hand on her breast. She 
knew Jake had experience with these things. She bounded 
up out of bed, still dressed in only her T shirt and 
panties that she slept in each night. She went to his 
room and, without knocking, turned the knob and walked 
in.

Jake was on his bed, naked, with a magazine open, 
showing pictures of naked women. He was beating off.

"Oh my gosh!" exclaimed Beth Ann. "Don't you ever do 
anything else except that?"

He'd paused at first, but then he spied her hard little 
nipples under her T shirt. The shirt didn't come down 
as far as it had when she'd first worn it and he could 
also see her camel toe, though she didn't know she even 
had one. He started beating off even faster, 
fantasizing about what was under those panties. "No" he 
grunted. "Not since you laid down the law about doing 
it with girls around here." He jacked harder, staring 
at his sister's breasts. "What do you want?" he gasped. 
He was going to shoot.

"Well..." she started. "Do ALL boys do that?"

"Ohhh yeah" panted Jake, but he wasn't answering her 
question, he felt the spunk rising in his balls. Beth 
Ann came closer to him. He looked so strange, so tense, 
so red in the face. He was gasping for air. "Are you 
OK?" she said, coming right to the edge of the bed.

"Ohhhhh Yeeeaaaaahhhh!!!" he groaned and his penis spat 
a foot long stream of his teenage sperm. It was 
followed by six or seven others, just as thick and just 
as solid. And at least two of those splatted right on 
the front of his sister's panties. Her mouth flew open 
and her hand automatically went to the spot, where her 
fingers slid through his spend. She thought she'd be 
horrified by the feel, but it was hot, and creamy, and 
slippery and... well... interesting! 

"I can't believe you did that!" she gasped.

"Sorry" he didn't sound sorry. He was staring at her 
panties. "It's just that I was close and you turned me 
on even more."

"I did?" she was puzzled. "Why?"

Jake decided to tell her the truth. It might result in 
her changing her dressing habits, but who knew? "I 
could see your nipples through your shirt, and I could 
see your pussy." It looks like it's pretty under your 
panties." He could still see them, and his cock had 
only gone down about half way. Jake was just chock full 
of testosterone and could often beat off two or even 
three times in a row if he was motivated. "If I could 
see them better I'd beat off again." Jake was going for 
broke.

Beth Ann felt her face flush. Her brother wanted to see 
her naked! Roger had wanted to see her naked too. And 
if she could watch Jake beat off from up close, she 
might be able to learn how to do that to Roger and make 
him happy. On impulse she lifted her shirt, exposing 
her breasts and then took it off. 

She watched Jake and his eyes got big. His cock started 
getting big too. Feeling a perverse thrill that she 
could affect him so, she bent over and slipped her 
panties off. When she stood back up she wanted to cover 
her mons, but she disciplined herself not to. Jake was 
stroking his growing hard-on now.

"What's it feel like when you do that?" she asked. 

"Well, it's probably a lot like when you rub yourself." 
he said. She looked puzzled and he added "You know, 
between your legs."

"I don't rub myself" she said, "except when I'm in the 
bathtub."

Jake was surprised. He said "Come over here. I want to 
show you something."

Beth Ann was wary, but she figured she could trust her 
own brother. She went to the bed and he moved over to 
let her lie beside him. He had stopped stroking his 
cock and it just lay there, pointing at her. 

He put his hand out. "I'm going to touch you. It won't 
hurt, but if you want me to stop, just say so. I think 
it will help you understand why I do what I do." He 
then moved his index finger to the tip of his cock, 
which had a big dollop of milky looking stuff on it and 
coated his finger tip with the stuff. He told her to 
bend the knee of her top leg and she did. 

That opened up her crotch to him and he slid his 
slippery finger between her pussy lips. He wanted to 
stick it inside her, but instead he brought it up to 
find the bump that every girl had and which made every 
girl go crazy. He found it and began circling it with 
his sperm-covered fingertip.

Beth Ann's response was gratifying. She sucked in a big 
breath of air and sighed "Ohhhhhhh that feels 
wonderful." He kept rubbing the diddling her clitty 
until he felt the warm wetness of her own lubrication. 
"You can do this too" he said, and he slid his longest 
finger inside her pussy. 

Beth Ann sighed again "Ohhh my" and rolled backward to 
lie splayed on the bed. Now Jake went to town, 
masturbating her vigorously. He leaned toward her. 
"And, if you let a boy play with your titties, I'm told 
it feels even better." She didn't stop him, so he 
leaned over and sucked one of her nipples into his 
mouth.

Beth Ann didn't know it, but her nipples were tied 
directly to her orgasm box, and when Jake sucked on 
that nipple, it jerked the string and a whole pile of 
orgasms fell out. Beth Ann was almost paralyzed by the 
intensity of her first one, which was a complete 
surprise. 

She felt the pleasure in her nipple, in her belly, in 
her pussy, around her clitty, almost everywhere, and it 
felt like she was going to fly apart into little 
pieces. Jake, knowing what was happening to her diddled 
and sucked even more wildly, hoping that if she had a 
really good time, she might be willing to do it again.

She was. 

In fact Beth Ann became almost instantly addicted to 
masturbation. Now, when Jake went in the back and 
jerked off, she got hot, thinking about it. Luckily, 
she could stroke herself while she stood behind the 
counter, but it never felt as good as it did when Jake 
did it. 

So she asked him to do it again. 

He was more than happy to do so, and one day he 
progressed by suggesting that it felt really good if a 
boy licked a girl's pussy. She thought that sounded 
pretty nasty, but changed her mind as soon as his 
sucking lips fastened onto her teen clitty and blasted 
her into an orgasm almost immediately.

The strange thing was that she was getting enough 
satisfaction at home that she didn't feel the urge to 
let Roger or any other male touch her. It got so that, 
if she was horny, all she had to do was slip into her 
brother's room after their aunt went to bed and he'd 
lick and finger her to all the orgasms she wanted. 

Jake, for his part, was pretty happy with things. It 
got even better when he talked his sister into tasting 
his cock. She took to it like a duck to water and soon 
was sucking down mouthfuls of his hot cum as often as 
he asked her to. Now, when she snuck into his room at 
night, they sixty-nined happily, sometimes for hours. 

In the store Beth Ann even relented a time or two and 
gave her brother a blow job while they were standing 
just inside the back room. Jake could look out the door 
and see if a customer came in while Beth Ann sucked 
happily on his cock until it fed her what she was 
rapidly becoming addicted to.

It was inevitable. Though he was getting his rocks off 
regularly, Jake missed the feeling of hot wet pussy 
wrapped around his cock as it shot goo all over the 
place. And so, one night, when he was about to shoot, 
he jerked his cock out of his sister's mouth and said 
"I want to show you something."

Beth Ann, used to her brother showing her some new way 
to get a thrill, laid there expectantly. It hadn't 
occurred to her that he'd mount her and fill her pussy 
with hard dick.

But that's what he did. 

By the time she realized what he was doing, her pussy 
was stretched and packed with a stiff penis. When she 
drew her breath in, she intended to demand that he stop 
immediately, but what came out was "Ohhhhhhhh Jake."

Hearing what he interpreted as agreement, Jake lustily 
began fucking his sister, and inside two minutes they 
were both knee deep in teenage orgasms. Jake happily 
spurted her chock full of hot heavy sperm, and Beth Ann 
happily let her spasming pussy milk it all out of him. 
Suddenly she understood the dreamy look she had seen on 
Sandra's face after she caught Jake fucking her in the 
attic.

As she had with everything else Jake had taught her, 
Beth Ann became addicted to fucking. First she snuck 
into his room at night and climbed in bed with him. He 
was always there, waiting for her, his dick hard and 
full of cream. And he was always ready to pump that 
cream into his sister's willing pussy. Quite often she 
stayed there in bed with him, his prick still plugging 
her channel, keeping all his potent sperm in her until 
they woke up later and she spread her legs for him 
again. 

Then, one Saturday, while their aunt was gone to visit 
a sick friend, and business was slow, Beth Ann got so 
horny that she let Jake slip it in her standing up in 
the back room. He pinned her to the wall and jabbed his 
cock up into her tender pussy until he flooded her with 
his baby batter. 

By the time three months had passed, Jake and Beth Ann 
were rutting away at each other every chance they got, 
and they started making chances. Now it was unusual if 
Jake didn't slide his cock in her at least three times 
a day. They were getting to be experts at cumming 
within two minutes, and they knew each other's bodies 
so well that they routinely reached the pinnacle of 
pleasure at the same time. But they tried not to do it 
quickly unless it was just flat an emergency. Beth Ann 
would rather be horny all afternoon, if it got her two 
hours of dedicated fucking later that night.

They both knew he'd knock her up. Neither cared. They 
decided they'd raise their baby, and the eight or nine 
that came after it, right there in the boonies and pass 
the store on to them some day.

END

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The author does not condone child abuse, this story is
meant as an erotic fantasy not real life. Anyone acting
out such scenarios in "real life" can look forward to
many unproductive years getting it up the butt by a 
fellow convict in their local prison.
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Kristen's collection - Directory 39