Brother and sister are doing the “nasty” when their mom catches them at it

This story was written as an xxx fantasy. The author
does not condone the described behavior in real life.

Pam Fulton and her twin brother, David, had been working
for several days now, cleaning out the downstairs
bedroom. It had belonged to Steve, their older brother.
Steve had gone off to college and Pam was eager to get
his room, since it was larger than hers and easier to
sneak back into the house if she was out too late with a

Dave did most of the heavy lifting and moving, while Pam
laid out the room’s decor. Being very close, the kids
laughed, teased and flirted a lot, arguing playfully
over the number of times things were moved. Pam was
wearing her light blue cutoffs, the ones with holes on
her ass, and every now and again Dave took great
pleasure in sliding a finger through to tickle and
fondle his sister’s tight young ass. At fifteen, Pam had
a firm, trim body, and the shorts made her ass look
round and inviting, even to her brother.

With her old room empty, Pam and David cleaned the walls
and windows, then got ready to shampoo the carpet. They
were half way through when their mother came in.

“Hey, great job, kids!” she beamed.

“Thanks Mom,” they chorused.

Karen Fulton was almost thirty-six and a mother of three
teenage children, but she looked much younger. Pam’s
friends often complimented her on it. She’d even caught
some of David’s friends staring longingly at her firm
ass or tits when they didn’t think she was looking. And
she couldn’t be sure, but Karen thought she had even
seen David ogling her once or twice.

She didn’t mind, if anything, she was flattered at the
attention. It pleased Karen to know that she could still
excite adolescent boys despite the age difference.
Regular aerobics and a strict vegetarian diet had kept
her figure just as slim, trim and appealing as the day
she married, her husband Frank.

Karen’s husband Frank, had driven Steve to college and
since it was a long trip, he’d decided to stay overnight
and return early the next day. Already, Karen wished
that Frank had taken her advice and let Steve take the
bus, but Frank wanted some time to talk to Steve so
Karen relented. She had been feeling particularly horny
all day, and now that Frank had gone she would deeply
miss his presence in her bed tonight.

Even after eighteen years of marriage they enjoyed a
regular and fulfilling sex life, but Karen found she
needed sex at least once a day or she became exceedingly
randy. On such occasions she masturbated, either with
her fingers or the vibrator Frank had bought her, but it
never really took the place of a hard throbbing cock.

Karen watched the twins work – and in her present frame
of mind – she couldn’t help notice how David’s tight
young ass nicely filled out his shorts. He had removed
his shirt and his strong chest and thigh muscles flexed
deliciously as he worked. Then, Karen noticed the
considerable bulge in the front of David’s tight pants.
Her pussy tingled and began to moisten automatically at
the alluring sight of a hard, male crotch. For some
reason, until now, she hadn’t realized what a hunk her
own son had grown into.

For a split second, Karen pictured him naked, his stiff
young cock ready for action… hot and hard and
throbbing. Just as suddenly, guilt washed over her and
Karen quickly dismissed the incestuous thought from her
mind, announcing instead that she was going to do some
shopping. It was the only thing that seemed to calm her
down when she got this horny.

She asked the twins if they wanted anything from the
shops and Pam made up a short list of things that they
needed. Windex, paper towels, some spot remover, and a
new vacuum cleaner bag. She also made a remark that
Steve wouldn’t recognize his “pig-sty” of a room when he
came back from college. Her mother laughed, taking the

“I’ve got to stop at the cleaners too hon. Do you have
anything that you want taken in?” she asked.

“Oh, thanks for reminding me,” Pam said, darting
downstairs and fetching her blue dress. A few minutes
later, her mother departed out the front door, telling
them she’d be back in about an hour.

Pam squatted down by the rented rug shampoo machine,
reading the directions on the bottle of soap. She had
just finished reading when David’s hands slid around her
and cupped her firm, full breasts in his hands. She let
him feel her up for a few seconds, pretending that
nothing was happening.

It was only when Dave slid a hand down to the crotch of
her shorts and began to rub his fingers over her cunt-
mound that Pam finally pulled away.

“Stop it, Dave! I’m your sister for chrissakes!” she
said in mock anger, but the sly little smile on her face
told her brother how much she had enjoyed his hands on
her sexy young body. From past experience, Dave knew his
sister was perpetually horny. He’d been spying on her
with her boyfriends since they were fourteen and he’d
seen enough to know that Pam had ceased to be a virgin
long ago. In fact, she had a reputation at school for
putting out at the drop of a hat… or pants for that

As always, the thought of his sexy twin sister throwing
her long creamy legs wide for half the boys at school
excited him, unfortunately he wasn’t getting any of it.
Pam went through boyfriends like clean underwear, (or
was that the other way around), and right now she was
between laundry deliveries.

She hadn’t been out on a date for two weeks, and Dave
knew she must be horny as hell; he could smell it on
her. Like her mother, Pam needed sex daily or she went
apeshit. Dave smiled. He’d had the hots for his sexy
sister for some time now… this might be his chance to
try something on with her.

“Getting any lately, Sis?” he teased, putting his arm
around her shoulder.

“More than you are, nerd!” she countered, shrugging him

“Aw, don’t be like that, Sis!” said Dave. He stood
directly in front of her so that Pam could see the huge
bulge in the crotch of his pants.

“Christ, Dave!” she giggled. “What have you got stuffed
in there… three pairs of socks or something?”

“Nope! It’s all me, Sis… all me.”

“I don’t believe it!” said Pam, reaching out

Her fingers curled around her brother’s semi-hard cock
through the thin material of his shorts, and she gasped.

“Jesus, Dave! It IS all you… MY GOD!”

“Yeah! Bigger than Tommy Carson, huh?” snickered Dave,
watching the surprised expression on his sister’s pretty
young face.

“Yeah, much! Ah I mean… um… I wouldn’t know, I’ve

“Yes you have, Sis,” smiled Dave, “and don’t try to deny
it ’cause I saw you two at it in the back seat of
Tommy’s car at the drive in one night.”

Pam didn’t answer, her eyes were still on her brother’s
mammoth cock bulge, and so were her fingers. Dave moaned
as Pam began to stroke and squeeze him to a painful
erection. He reached his own hand down between her legs
and gave his sister’s plump little cunt-mound a
suggestive squeeze.

“Feel good, Sis?” he murmured.

“Mmmmmmmmmm!” she nodded. “Take your pants off and let
me see it”.

“Uhhh, uhhh!” said Dave shaking his head. “You show me
yours and I’ll show you mine.” His smile was infectious.

Pam grinned back at her brother and stood up, removing
her shorts. What the hell, she thought, even if he was
her brother she’d always found him kind of cute. Right
now, she was really to damn horny to care. Besides, if
his cock was half as big as it felt, she was in for one
hell of a good time. She took off her top too, and stood
before her brother in nothing but a pair of tight, silk
panties. Watching his eyes, Pam skinned her panties off
and let them drop around her ankles.

Now it was Dave’s turn to gasp. His twin sister was
beautiful! All the times he had spied on her, it was
from a distance, or in the dark. Now Pam stood before
him naked, her gorgeous firm tits pointed right at him,
and her little blonde cunt-slit poking out from between
her perfect thighs.

“Now you,” she murmured, eyeing off the huge bulge in
her brother’s pants. “I want to see it, Dave.”

Dave couldn’t remove his clothes fast enough, and in a
flash he stood naked before his horny sister. Pam
reached out and grasped his cock. It was huge! Much
bigger than any of her boyfriends had ever been. She
wondered why she hadn’t noticed the size of her
brother’s cock before. Dave placed one hand on his
sister’s naked pussy and fondled her small conical tits
with the other. In no time, they were both panting for
breath. Dave’s fingers were sloshing around in Pam’s
aroused little cunt and she was pumping her fist up and
down his raging erection like there was no tomorrow.

“Fuck me, Dave!” she moaned, breathing hotly into her
brother’s ear. “Ohhhhh, I want you to fuck me, quick!”

Dave picked his sister up and lay her on the couch. He
didn’t waste time with preliminaries, they both new that
their mother would be back any minute. Besides, the
sudden incestuous lust each felt for the other was
urgent and overwhelming. Quite simply, Dave had a load
of hot steamy cum with his sister’s name on it, and Pam
couldn’t wait for him to give it to her.

Spreading her long tanned legs wide, Dave positioned his
prick at the entrance of his sister’s gaping cunt-hole
and pushed inside. Surprisingly, his huge, bloated cock-
shaft slid in easily, and within seconds Dave was
plunging rapidly in and out of Pam’s hot, juicy young
quim. Pam’s legs were locked around his waist, pulling
her bother into her as he fucked her.

Sweating in the late August heat, they both moaned
loudly as their thrusts swept them along, urging them to
move faster and faster. Pam felt her climax arrive, and
her pussy clamped down on David’s thick cock. She moaned
loudly, gripping him with her legs. David thrust once,
twice, then stabbed his sister with his long thick
shaft, moaning and spurting his thick hot semen deep
inside her. Quivering, they lay motionless for several
long minutes, still joined, basking in the warm
afterglow of a quick, but mutually satisfying fuck.

The sound of their mother’s car in the driveway startled
them and they quickly parted, Dave’s semi-hard cock
leaving his sister’s creamy cunt-hole with an audible
slurp. They grabbed their clothes and took off. David
dashed to the downstairs bathroom, right outside Pam’s
new bedroom, and Pam scurried into the upstairs bath,
feeling her brother’s warm cum squish between her
cuntlips and run down her lean young thighs.

David dressed quickly, using a wet washcloth to remove
most of Pam’s pussy juice from his genitals. He left the
bathroom and picked up the window cleaner and a rag,
pretending to be finishing up in the lower bedroom.
Their mother came in and saw David emerge, cleaner and
paper towels in hand. She asked him to help her carry in
the load of items from the car, which David did. He
worried about his mother getting too close to him, as
she seemed to be doing, fearing she’d be able to detect
the scent of his sister’s pussy on him.

Pam emerged downstairs and carried in the remaining
items. She and David exchanged knowing looks…looks
that said; “What a close call that was!” and “I hope Mom
doesn’t suspect anything!” After carrying in the bags,
Pam and David returned upstairs, using the shampoo
machine to clean the carpet. David worked the machine,
and Pam went downstairs to straighten up her room a
little, and try to organize some of the mess.

After dinner, the three of them watched TV for a while.
Pam and David giving each other hot little glances
whenever their mother wasn’t looking. Karen didn’t
notice a thing, except that maybe her kids were suddenly
not fighting like cats and Rockys as they usually did, but
she put that down to being tired after a busy day.

Feeling a little tired herself, Karen went to bed early,
leaving Pam and David on the couch watching TV. As soon
as their mother’s bedroom door closed, David reached out
and ran his hand up his sister’s leg, cupping Pam’s hot
cunt-mound through the tight crotch of her shorts.

“Feel like another fuck, Sis?” he whispered, giving his
sister a lewd grin.

“Don’t be so disgusting!” snapped Pam, but she made no
move to take her brother’s exploring hand from her

Dave began to rub his sister’s steamy cunt through her
shorts. He located her clit and concentrated on
stimulating her as quickly as possible before she
protested too much. From a long succession of easy
girlfriends, he knew that once you got a girl like Pam
hot enough, she’d do almost anything and Pam was getting
hotter by the minute. He kissed her neck and whispered
in her ear.

“Come on Sis, let’s fuck! I know you want it!”

“Nooooo, Dave!” murmured Pam, “We can’t with Mom in the

“Why not?” countered her brother. “Steve’s room has a
lock and it’s downstairs so Mom won’t hear a thing.”

“It’s my room now, not Steve’s, remember!” Pam said
wiggling her ass around on the couch as Dave’s fingers
massaged her moistening young cunt. Her legs were spread
wide now, giving her brother complete access to her
squirming sex.

“I don’t care whose room it is,” whispered Dave,
nibbling his sister’s earlobe. “You’re as horny as I am,
Sis! Let’s go fuck!”

Pam reached out and squeezed her brother’s cock-bulge
through his jeans, clearly impressed with the size and
hardness of it.

“Okay, I guess we’d better, brother dear,” she grinned,
“before that monster busts right out of your jeans!”

Dave followed his sister down the stairs and into her
new room. Once inside, they embraced, kissing
passionately and letting the incestuous excitement of
the moment arouse them. Pam led David to the bed, and
began unzipping her brother’s jeans. David kicked off
his shoes, and she slid his jeans off, folding them
neatly and placing them under his shoes by the bed.

David’s shirt followed. David, in turn, removed Pam’s
white T-shirt, and her tight shorts, feeling the heat
from her loins as he removed her moist panties. Pam
knelt in front of David and began sucking on his stiff

She licked her brother’s balls and rubbing his cock all
over her face. They both strained to keep their voices
down, and to listen for sounds of their mother coming
down the stairs. Fortunately, the stairs creaked loudly
in several places. Pam made loud slurping noises as she
sucked on her brother’s cock-meat, noises that usually
only occur with a very large mouthful of prick. Pam even
pushed her breasts up between his legs, caressing his
balls with her button-hard nipples.

Pam looked sexily up at her brother and whispered
softly. “Come in my mouth, David.”

Her lips sank back down over his thick shaft, sucking
him as far as she could. David moaned softly, feeling
his cock swelling and straining to fire into her velvety
mouth. Pam removed the throbbing shaft and licked it,
smiling up at her brother’s reaction. David looked down,
seeing his pretty blonde sister’s eyes sparkle and her
tongue lapping his cock. It was all he could take. Pam
was licking up the length of his warm shaft. Just as her
tongue brushed the glans, David’s thick, hot sperm
gushed out, the thick shaft throbbing mightily in her
small hand.

The spurting cum landed on the side of Pam’s face with a
warm, wet splat, and she quickly slid his cock back into
her mouth. Another spurt sent his warm, salty jism
splashing against the back of her throat, and she
swallowed in reflex. Another squirt followed and Pam
held this one in her mouth, savoring the hot, salty
taste of her brother’s sperm. Pam finished by holding
David’s cock to her chest and milking the last of his
cum onto her tits with her hands.

David looked down at his sister, and she giggled
quietly. She looked back at him, an impish gleam in her
eye. Her tongue licked her lips, and she let a little
sperm trickle down from the corner of her mouth before
licking it back up, then swallowing noisily. Pam licked
David’s cock off and then knelt on the floor, showing
him her succulent ass.

“Fuck me Rockygy-style, David!” she pleaded, wiggling her
perfect little butt at her brother.

David wasted no time, sliding his pole between his
sister’s legs he began to move in and out of her
slippery pussy, reaching around to massage his sperm
into her tits. Faster and faster they went, with Pam
biting her hand to keep from moaning out loud.

Dave fucked his sister hard, her body swaying, her tits
brushing the soft carpet, and the only sounds were their
harsh breathing and the soft noises of her wet pussy
slurping around his slippery cock. In no time at all,
David shuddered and lunged forwards, lodging himself
deep up inside her belly.

His cock pulsed and jerked, spewing out another load of
thick creamy cum, this time way up inside his sister’s
cunt. Pam moaned softly in a high pitched voice,
quivering as his cum poured into her. They rested for a
few minutes, with Pam on the floor under him, until
their breathing slowed.

Pam’s tightened her pussy around her brother’s thick
cock, feeling his semi-hard shaft twitch and slither in
her soaked pussy. She rolled over and sucked David’s
cock, tasting her own juices mixed with his cum. She
licked and sucked while he knelt above her, and she
licked from his anus to under his balls, bringing him
rapidly to hardness again. Pam rolled over onto her
stomach and arched her tight ass up, reaching around to
spread her cheeks. She felt so dirty doing all these
deliciously depraved things with her own brother, but it
excited her beyond belief.

“Fuck my ass,” Pam whispered.

She wondered if David really would. Most of her
boyfriends never did, they were only interested in
fucking her tight cunt or getting sucked off. In fact
she’d only done it once before, strangely enough with
Tommy Carson, that same night Dave must have been spying
on them. She half expected her brother to ignore her
request and fuck her pussy again.

So Pam was slightly disappointed when his cock slipped
into her soppy cunt and pumped slowly a few times. She
was all set for Dave to fuck her pussy once more when
she felt his cock withdraw and press against her rear.
God yes, she thought, he was really going to do it!

Pam reached down and fingered her clit, relaxing her
asshole for her brother’s cock. Dave pressed in slowly,
spreading her asshole wide and Pam cried out, muffling
her whimpers of delight with a pillow. Wider and wider
the head of his cock spread her tight hole, until with a
soft pop, he slid into her ass. Pam, feeling very horny
and naughty, leaned back, shoving her brother’s cock
deep into her spread open ass. They moaned softly
together as his cock slid into her tight hole.

David felt his sister’s incredible tightness gripping
him, and Pam felt as though a baseball bat was being
shoved up her ass. Her cunt spasmed several times,
making her asshole pulse around David’s cock. Pam moved
her ass back and forth, and then David began pumping her
tight hole.

After pumping for a minute, David pressed her hips to
the floor and began to plumb her bottom with his thick
reaming tool, alternately filling, then emptying his
twin sister’s butt. Pam was climaxing in small,
miniature orgasms, her cunt drooling a thick white
cream. David shoved his cock deep, the rotated his hips
back and forth, stirring his cock in her asshole.

On and on they went for long minutes, until Pam thought
her brother’s increasingly harder thrusts would tear her
apart. She arched her hips up to meet his pounding
thrusts. David came hard, slamming his cock deep within
her. Pam could almost hear the roar of his sperm
flooding into her.

Dave shook and pulled Pam’s hips against him, pressing
his cock deep so that he could fill his sister’s tight,
round butt full of cum. He spurted over and over,
sending hot streams of jism gushing into Pam’s ass,
filling her insides with his boiling cum. Pam writhed
and panted on the floor, then lay still as they both
tried to catch their breath.

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