Note: This story was dynamically reformatted for online reading convenience.
 
 The Kids' Discovery Written by Muffin Stuffer

   Copyright (c) 2012, Muffin Stuffer.  ALL Rights Reserved



   "Hmmph" "Ahhhhh" "Hmmph" "Ahhhhh" "Hmmph" "Ahhhhh" "Hmmph" "Ahhhhh"
their sounds kept getting louder and louder as they were coupled in age old
fashion his hard cock reaming his long-time wife in a steady rhythm.  She
had her arms around her lover holding him to her breasts as he humped her
driving his long cock in and out of her vagina.

   "AIIIIEEEEEEEE!!!!  OHHHHHH!!!!!!  YYEEEEESSSSSS!!!!!!!" She screamed
out as an orgasm overcame her.  He stopped thrusting and lay on her with
his cock still buried deep inside her fertile, clasping vagina.  "Shhhhhhh
honey, we don't want to wake the kids.  It's too early for them to get up
and besides this has to last you for a couple of weeks." He said as he
kissed her to quiet her.

   "OH Brad, I can't help it.  You know how I am when I get close to
ovulating.  Your fabulous technique and long cock coupled with my love for
you and us just drives me over the top." Marsha said as she began to come
down from her first orgasm.

   He remained coupled with her as they whispered, kissed and whispered
more then kissed more.  He could feel her vagina squeezing and massaging
him as they made love.

   Their two oldest were awakened by her sudden outburst.  "Sara, did you
hear mom?" Matthew asked.

   "I don't know, Matthew, maybe we should go see." Sara replied.

   Matthew and Sara slept in separate beds in the same room.  In an
adjoining room three more younger siblings slept peacefully.  They lay
there and whispered.  It was dark in their room as Matthew, 12 threw off
his covers and crept carefully to the door of their room.  "Matthew, wait
for me.  I want to go with you." Sara whispered.

   "We have to be quiet." Matthew said as he took her hand and helped her
through the door.  Both were barefoot so their footsteps were hushed by the
carpet under them.  Their pet cat, Muffy, rubbed his tail on their legs as
the quietly made their way towards their parents' room.

   The door was slightly ajar as they peeked through the narrow opening. 
There was a dim nightlight providing illumination as they saw their dad
lying on their mom.  They could see her legs flat on the bed and his bare
butt.  He was lying flat on her, they were kissing and whispering.  His
hips were rising and falling slowly.  They could hear squishy sounds on
each rise and fall.

   Matthew's penis was now tenting his PJ shorts as Sara was squeezing his
hand as she saw what was happening.

   "Hmmph" "Ahhhhh" "Hmmph" "Ahhhhh" their mom moaned as the lovemaking
action unfolded before them.

   "Shhhhhhhh" Dad kept whispering as his hips rose faster.  The kids could
now see his long, hard cock as it came out from between her legs and the
disappeared again.  The bed was positioned such that from the door the view
was butt on.  That is to say that anyone looking in would see whatever was
happening from the 'foot of the bed perspective.'

   "Look Matthew," Sara whispered, "they are making love just like on the
computer.  Do you think they are making a baby?"

   "Shhhh sis, they might hear us." He answered as he squeezed her hand a
little tighter as they watched.

   They watched as mom lifted her legs and knees.  Dad then put his arms
under her knees and lifted her legs to his shoulders changing the angle of
his thrusts and showing the kids mom and his sex apparatus more clearly. 
Both kids began sweating and hand squeezing becoming more aroused in their
own way.

   Sara's virgin vagina was getting wet and itchy.  She was not used to
having that sensation and it raised her curiosity.  She rubbed her vulva
through her shorty nightgown.  She had just begun to get puffy nipples as
her body was beginning its change from girlhood into womanhood.

   The action on the bed was in full swing now.  Dad's cock was slowly
sinking deeper and deeper into mom and then slowly withdrew until only the
head remained inside her.  They watched as he would thrust quickly fully
inserting his cockhead and his balls smacking her butt.  Then he would
slowly withdraw almost all of the way out.  Each thrust resulted in a
"Hmmph" "Ahhhhh" from mom.

   She was clearly enjoying their coupling.  "Hmmph" "Ahhhhh" "Oh
Johnnnnn!!" she moaned as another orgasm was about to peak.  John speeded
up now almost slamming her into the bed.  The bed was bouncing now in step
with their thrusting.  She and John were almost lip locked though the kids
couldn't see that.  Her breasts were being flattened by John lying almost
full weight on her chest.

   Matthew's hard penis was now sticking outside his fly and he was rubbing
it.  He turned to Sara and watched her as she rubbed herself faster and
faster.  They were still holding hands though they were sweaty now.

   Meanwhile, John was nearing his own release as he continued to bang his
wife.  He felt his balls draw up and then his cock swelled as he made one
last deep thrust and held himself deep within her clasping vagina. 
"ARRRRGHHHH!!!!!  AHHHHHHHH!!!  HERE ...  IT...  Cooommmmessssss!!!!" he
groaned as the first of several bubbles of sperm shot forth from his
flexing cock.  "UnnnnnNGH" he moaned as each spurt jetted into her. 
"UNNNNNGH" "OH HOoooonnnneeyyyy!!!!" He yelled now as his cock jerked
several times.

   "YEEESSSSS!!!  FFFIIIILLLLL MMEEEEE JOOOOHHHNNNNN...  DOOOONNNN'TTTTTTTT
STOOOOOOPPPPPP" She wailed as she grabbed his butt and pulled him closer to
her saddle, his cock deeply resting on her cervix.

   It was too much for the kids now.  They watched as mom got impregnated.
They were lost in their own thoughts though their bodies were telling a
different story.  Hand-in-hand Matthew led his sister to his bed.  He lay
her down in the middle of his twin-size bed and raised her gown.  He gazed
upon his sister's hairless mons and puffy vulva in a whole new light. 
After seeing his dad's hard cock inside his mom, Matthew aimed his hard
penis at his sister's virginity and then fell upon her as it touched her
wet heat.

   Never having done this before he felt her indentation at her entrance
and then pushed hard.  Her hymen was thin and ruptured quickly as his 4
inches sank into her tight channel for the first-time.

   "OWWWWWW" She yelped as her hymen split.  Her virgin blood squirted on
him and spread quickly down her split onto the bed.

   No one else heard them even though it startled Matthew at first, he
covered her mouth with his in a loving kiss.  Their mouths opened slightly
as her further yelling was muffled.  She threw her arms around him and
hugged him as he thrust repeatedly into her young body.

   There was no loving.  It was simply pure lusty thrusting.  She felt him
start to pull out and she thrust up to keep him fully engaged with her. 
Their lips separated slightly and she moaned, "Ahhhhh Matthhhhhewwwwww" as
her pain was replaced with those passionate good feelings.

   "OHhhhhh....  Sissy.....  sssoooo....  Ni......ce.." he groaned as he
lost it and began spurting his young seed inside her baby channel. 
"Feeelllllssss soooooo gggooooooddddd" He moaned as his spurts quickened
and forcefully splattered her now welcoming body.  As quickly as it began
his spurts stopped jetting and only dribbled now into her as she locked her
legs around his to keep him attached to her.

   Their moans were louder now as they both fought for breath.  He leaned
down and kissed her.  His kisses unlike any he had ever done with anyone.
Naturally, his tongue slipped between his lips and licked hers.  As soon as
she felt that she opened her mouth and her tongue met his.  They dueled for
several long seconds until he broke the kiss and raised up to give one more
hard thrust into her as his cock swelled once more to shoot powerfully his
seed deeply into her.

   He fell upon her squeezing her in a bone hurting hug that she returned
in her passion.  It only lasted a few short minutes, maybe two but no more
than three.  Nevertheless, it changed their relationship forever.

   "I love you Sara.  I really, really, love you." He whispered.

   "Oh Matthew, I love you so much too.  Don't you ever stop loving me."
She moaned back.

   Her young pussy was now squeezing his penis almost hurting him but he
pushed and found the muscles to flex it inside her.  Her vagina experienced
its orgasm though her brain hadn't been overcome as yet.  He felt the
squeezes and the squeezing seeming to draw him deeper into her depths.  He
remained fully hard while deeply embedded.

   Their kisses became pecks and sucks and more pecks as they were overcome
with their individual passion.  Soon they both fell asleep into a love nap
with each other.  Their genitals remained locked together for nearly
half-hour.  His body even kept dripping his virile sperm into her though
she wouldn't catch as she was pre-pubescent.

   Later, near daybreak, mom looked in on Matthew to see if he was awaking
when she saw him and Sara asleep with him lying on top of her.  She could
see they had engaged in sex since Sara's dried blood and his semen were on
the sheets and there was some white seepage still at her now closed vagina.
She stood and watched for a few minutes trying to get a grasp on the
situation before her.

   Joan, mom, felt her own pussy now leaking John's emissions and her body
betraying her.  Quietly she went to check on her other kids.  They were
still sleeping soundly, each in their own beds.  She wondered if Sara was
fertile then realized she hadn't passed menarche so she thought she was
safe.

   As she passed their room again she looked in.  Sara was now awakening
and hugging her brother.  He stirred and his penis hardened.  "Matt, put it
in me again.  I liked that and I love you so much." She whispered.

   They kissed as he reached down and aimed his now very hard penis to her
vaginal entrance.  She thrust up on his first contact and mom now saw her
offspring coming together in the physical act of love.  She stood
mesmerized as they thrust at each other.  She could see clearly his little
balls bouncing on his sister as he pushed into her and withdrew.  She was
matching him thrust for thrust.  Their "Hmmphs" and "Ahhhhhs" were quiet
though they were getting progressively louder with each thrust.  To soon,
he slammed into her now clasping pussy and held fast as his balls gave up
another offering of his virile seed deep into her pussy.

   Joan just stood there in the doorway holding her hand over her mouth as
she watched her oldest complete his passionate loving of his sister.  She
watched as they kissed open mouthed to hold down their love sounds though
the "Hmmph"ing and "Ahhhhh" ing was still heard.

   She started to walk away to leave them to their passion when loving arms
embraced her.  John startled her as he looked at his son finish up loving
his sister.  Dad saw the boy's penis jerk a couple of times as he delivered
his last squirts of semen into his loving sister.

   Dad kissed the back of mom's neck as he whispered, "Isn't that a
beautiful sight?  Let's leave them alone honey." They stepped away then
into their own room.  Joan turned and embraced her husband as he felt her
breasts and cupped her butt with a hand.  She reached for his now hardening
manhood and wished they could finish this but work and motherhood beckoned.

   They kissed passionately then a quick lip peck.  "I'll have to talk with
them later today.  I don't want anything to happen now that they have found
love or at least passion and it needs to be nurtured not chastised." She
told John.

   "I agree.  Let's you and I meet for lunch and we can talk about it
outside their hearing and make a plan." John said.

   They called the kids to breakfast and soon were inundated with 5
running, jumping, yelling boys and girls.  The oldest were showered now and
almost fully dressed for school.  There was no indication that anything
untoward had happened between them other than they were more loving to each
other.

   [Later that morning]

   Mom took the younger kids who were not in school to the day care center
they liked and then would pick up the kindergartner and second grader after
school at about 2:30.  She wore a simple print housedress wither her
favorite granny panty.  It would give John access to her if he chose to and
still not show her shaved pussy but shaped, trimmed mons.

   She met him at their favorite restaurant and were seated in a rear
corner area.  They kissed passionately and then both tried to speak at the
same time.  He finally relinquished to Joan.  "John, I've been thinking
about the event I witnessed this morning.  Matt and Sara were making love.
They weren't just having sex like we do sometimes.  It was truly loving, at
least what I saw.  I don't want them to think it is wrong for them to
engage in that kind of activity in our house or in their bedrooms."

   "Joan, I saw the same thing.  You know we can't keep them apart now. 
Once they have tasted the 'forbidden' fruit of love they won't stop.  I
have given it some thought too, this morning.  Tonight let's take them to
the furniture store and buy them new bedroom suites.  The ones they have we
can store and give to their brothers and sister when they get bigger."

   "What a lovely idea.  Why don't we go together with them and let my
sister keep the younger ones.  That way there won't be any questions as to
why from them.  Plus it will make them feel more adult." Joan added.

   "Joan, I think that after the trip to the furniture store I should plan
on having that second bath upgraded since it is shared by all the kids. 
There is room for a larger shower area and we can add another lavatory with
new cabinets.  We should upgrade ours too with a larger family tub and
maybe add a Jacuzzi in the patio shower room from the pool area."

   "Good idea!  We can afford it and I'll have a girl, no woman-to-woman
talk with Sara.  Why don't you have a man-to-man chat with Matthew, too.  I
won't leave anything out and you shouldn't either.  That includes letting
them know we are brother and sister." Joan said.

   "OK, sounds like a plan.  Now let's enjoy lunch." He said.

   That evening after dinner, they took the younger kids to Joan's sister's
for the night.  Her kids love to play with them and lately they have been
too busy to get together.  They then went to the furniture store.

   "Kids, you are both growing up and it's time to reward you with new
bedrooms.  Tonight you will choose your bedroom.  Your mother and I will
help but it will be largely your choice of furniture and colors." John
said.

   "Yippee!" Sara cried.  "I want a white bed with a canopy and lacey
trimmed curtains around it."

   "Ok we'll see what's available." Joan answered.

   They went to several stores before they finally made their choices. 
Matthew couldn't seem to make up his mind.  He was trying to be grown-up
but there was still the kid in him.  Both got their bedroom suites complete
with 2 chests, a double size bed that could expand later to a queen size,
if needed.  Sara got a double mirror dresser with drawers and a makeup
chair.  Matt didn't want a dresser so he got another chest for his folded
clothes.

   They didn't buy mattresses there.  Mom and dad had invested a couple of
years ago in the Sleep number bed and they liked it since it would
accommodate each body and didn't squeak.

   John went to Wally World and bought the Coleman air mattresses with
inflators then they went to Home Depot and he bought the necessary wood to
make a foundation for the mattresses that would fit the frame and keep them
from slipping.  On the way home Joan said, "Matthew I was at your bedroom
this morning and saw you and Sara making love.  It was the most beautiful
thing I ever saw.  When we get home Sara, you and I will have a nice chat
and dad will have a chat with Matt.  You are not in any kind of trouble. 
We will tell you more in just a few minutes since we are almost home."

   After they arrived home the parents sat down with their kids and told
them they were really brother and sister and how they discovered each other
after witnessing their parents making love.  It was not unlike Matt and
Sara seeing their parents.  They fixed drinks and had some cookies as they
sat and talked about sex and babies.  After questions and answers dad took
Matt to the den and Sara went with Joan to her parent's bedroom.  Both
received detailed information regarding babies and girls' cycles.  Both
kids received the same information but from the perspective of each gender.

   Matt was happy to learn that it was his responsibility to be sure his
lover was happy and satisfied before he got his jollies.  Of course,
sometimes his mate may want the rough and manly approach but it was the
man's job to be sure she is satisfied.  John then took Matt to his bathroom
and they showered together similar to when they go camping.  Matt was glad
to see his dad was trimmed nearly bare.  They touched each other as dad
showed him various grooming techniques and demonstrated masturbation
skills.

   Mom took Sara and went over the need to let mom know when her periods
start.  She would buy her and ovulation kit so they can track the first
ovulation in hopes Sara didn't become pregnant.  Also they would have the
Plan B pill should they mess up.  At no time were condoms ever discussed.
After their private individual talk Mom and Sara bathed together in Sara's
bathtub/shower combo.

   After they all had showered.  Matt and Sara were reunited in his
bedroom. "Kids from now on you have our permission and desire to sleep
together.  If one of you chooses not to the other cannot complain.  It will
be Sara's choice when it comes to sex matters but in any event NO means
NO." Dad said.

   "I won't ever say no daddy to Matt or you.  I love him and want him in
my bed from now on." Sara said.

   About that time John noticed a flush come over Joan.  "Honey, are you
alright?  I saw you blush." John asked.

   "Yes I did have a heat flush.  I think I conceived.  It happened like
that with Essie last time I got pregnant." She answered.

   "Mom are you going to have a baby?" Sara asked.

   "I hope so.  Dad and I have been trying for a couple of months now.  We
want another little girl but I think that this one will be a boy since
daddy had me last night.  We'll just have to wait and see." Joan said.

   "Yippeeeee!  Matt let's you and I try to make a baby." Sara announced.

   "Now kids, you can practice but don't really make it happen.  Just enjoy
yourselves." Dad said.
Epilog:

   Joan did get pregnant and it was a little girl.  Now their family was
completely even boys to girls.  Sara and Matt slept together in their new
beds alternating bedrooms often.  Sara loved her curtained bed though she
had trouble keeping her sisters from sleeping in it.  She passed menarche
when she was eleven almost twelve and was put on the patch.

   Matt and she maintained their normal brother/sister relationship outside
of home even dating others until he left for college.  Sara missed him
terribly.  She was as homesick for him as he was for her.  When she
graduated they got an apartment in his college city and they lived together
as man and wife from that day on.

   In her senior year second semester, she conceived on purpose now.

   The End. muffinstuffer@mrdouble.com