Note: This story was dynamically reformatted for online reading convenience.
 
 An Innocent Act (bg, inc, voy, exh, preg)

   By

   Boy Trainer

   Chapter 1

   My twin sister Angela and I were going into the 7th grade and had just
gotten home from shopping for new clothes.  I was twelve and because all of
my friends had switched to boxers I asked mom if I could as well.  She
seemed confused, but agreed.

   As we always do after shopping for clothes mom insisted that we model
our new clothes for her and dad.  I think for dad it was purely meant to
show whether mom spent the money wisely.  For mom it was to show off what
great tastes she had in fashion.

   Normally we would change right in front of them because we never had a
problem being seen in our underwear.  We always walk around in our
underwear especially in the mornings, but that was about it.  However, this
time I had switched to boxers and mom wanted to see how they look on me, so
she told me to go in my bedroom and put a pair on.

   I saw no reason not to, so I agreed and headed off to my room to change
into them.  When I returned I was wearing my new blue plaid boxers.  "Oh
they look nice!" Mom beamed.  "Don't you think so Jake?" She asked my dad.

   "Hmm." He didn't seem very enthused.

   "Well I think they look nice Alex." She said to me ignoring dad's
disinterest.

   "Now try these jeans." She said handing me a folded pair from the
shopping bag.

   I grabbed the jeans still loaded with brand and price tags, but when I
bent over to step into them my dick slipped through the fly which never
happened when I wore my tighty-whities.  When this happened I had my back
turned to Angela so she couldn't see, but mom did, however she acted as if
she hadn't seen a thing and that helped because I was really embarrassed
and having second thoughts about wearing boxers.  They just felt so strange
and I really wasn't comfortable in them.

   After doing the runway walk for mom we changed into another outfit only
this time when I removed my pants Angela got a clear shot of my dick
peeking out of the fly.  "Ewe!  Your showing!"

   "Shut up!" I spat in anger.  Then I turned to mom and said.  "Mom you
have to take these back and get me briefs."

   "What's wrong with them?" She asked.

   "Um...  My thing keeps popping out!"

   "Well I heard they're better for boys.  They keep the testicals cool."

   "Bullshit!" Dad sparked in.

   "What?" Mom asked.

   "It doesn't matter if they're tighty-whities or not.  Any trapped air is
insulation keeping body heat in.  You have cloth inside of cloth and that's
trapped air." He seemed to snap.  "If that's the argument for boxers then a
boy is better off not wearing any underwear at all.  Personally I think
boxers look stupid.  They remind me of Gomer Pile.  They really look
dorky."

   The thing is, when it comes to things like fashion and clothing of any
sort dad normally leaves those things in mom's capable hands, but dad's a
biologist and once he hears ignorance he pounces.  Don't get me wrong,
dad's not a nerd or even a geek; he's just smart.

   "Yes dear, but I think they look good on him; don't you think?" She said
as she physically twirled me around so dad could get a good look.

   Angela immediately saw an opportunity to embarrass me a little further
and started spinning me around like a top.  "Yeah Alex model those things
for us." She giggled.

   I knew she was only joking and now that Angela was in her own panties
and training bra I reversed the situation and started spinning her around.
"Let's see you model a little bit!"

   This turned into a good natured wrestling match between us and
inevitably we wound up wresting on the floor.  Even though Angela had a
little weight and height on me I easily overpowered her and found myself
pinning her face up and holding by her wrists with my body completely
covering hers.  At that moment we were all laughing including mom and dad
and though Angela struggled to shift her weight, she just couldn't break
free.

   It was then that I suddenly started to get a boner and sure enough my
dick found its way out the fly again only now it was pressing against
Angela's pussy.  I could have backed off at this point, but one thing I
instantly noticed was my dick was not pressing against her panties.  My
dick head was lodged between her pussy lips and seemed to be slipping in
further as it grew harder.  I guessed that somehow her panties got pushed
to the side while we were wrestling.

   Things started getting really strange at this point because both Angela
and I knew what was happening.  I had my dick at the verge of penetration
and any movement she made only made my access easier.  On the other hand
both mom and dad were watching on.  I wasn't sure if they could see what
was going on between us because her legs were spread to the outsides of my
legs and mine were closed tightly together and straight between hers, but
the laughter in the room abruptly slowed and stopped to a dead silence.

   I was lost in mixed emotions as to what to do next.  On one hand I knew
we should never be doing what we were doing and I was extremely fearful
what mom and dad would do IF they actually knew what was going on.  On the
other hand I just couldn't control myself.  My dick seemed to stretch all
on its own and to top it off Angela's legs seemed to be widening very
slowly allowing me to slip even deeper inside her.  Was she actually
allowing me to fuck her?

   I tried to formulate an escape.  I could roll off of her, but if I did
that I wasn't sure how to hide my boner and even if I could get away with
having a boner in the first place; how could I explain the fact that now it
was completely soaked and glistening with my sister's juices?  Not to
mention if I could formulate an escape; how could I explain to Angela what
I was about to do so that she could match my movements in a way that our
parent's wouldn't know what was going on?

   Meanwhile and in a matter of seconds I seemed to have bottomed out even
though my dick wasn't quite half way in her, but the next second Angela
grunted in pain and my dick was suddenly surrounded with the wonderment of
warmth and an ecstasy my brain couldn't comprehend.  Also Angela's legs
were now divided widely with her knees crooked upward.

   I tried to back out, but as I did so my dick seemed to scream "Put me
back in!" and it was as if I had no control over it.  My hips followed my
dick's instructions and violently shoved my cock back in place, but now it
seemed to scream out.  "Pull me back out!"

   I was shaking with fear and yet on the other hand I really didn't care.
My hips were now on auto pilot and my brain was switched off.  I started to
cry.

   As the tears rolled down my cheek I felt a hand being gently placed on
my lower back which judging by the size I knew had to be my dad's.  "Shhh."
He soothed into my ear.  "Relax.  It's okay son.  Don't worry, just let it
happen."

   "Don't worry." Mom whispered.  "We know what happened.  I watched the
whole thing and it wasn't your fault.  It wasn't either of your faults. 
Just do what your dad says."

   "Dad I..." I tried to defend myself, but dad rubbed my back up and down
my spine.

   "It's okay, just relax.  What's done is done; you may as well enjoy
it... That's it son." He whispered lying prone on his elbow next to me
continuing to rub my back.

   The next thing I knew my whole body went stiff and I could feel my cock
pulsate with such force my inner thighs began to hurt.  "Arr!" I winced in
merciless ecstasy and I couldn't help but picture in my mind millions of
little tadpole like sperm blasting out of my dick and swimming towards my
own sister's awaiting egg even though the likelihood that she could have an
awaiting egg and I had actual sperm was extremely low.  Still, that didn't
matter.  This I did not learn in sex education which I haven't had yet.  I
learned it from the discovery channel.  It was a documentary I watched not
too long before and the mere thought of it drove me to continue thrusting
in and out of her because no way in hell was my dick finished yet.

   "Oh he's going again." Dad said in surprise.

   "Jake." Mom injected.  "The first time I can understand, but shouldn't
we make him stop now?"

   "Shush." Dad hissed as I now mindlessly started to vigorously slam in
and out of Angela's now soaked cunt.  I couldn't have cared less that mom
and dad were watching anymore.

   Dad let me pound my sister for a few more seconds and then came in close
and whispered.  "Okay, now you can slow down a little and let Angela enjoy
it too.  It isn't all about you; you know."

   All I could do between panting was nod my head that I understood and
agreed with him and when I did manage to slow my speed Angela wrapped her
legs around my lower back and pulled me in tight so that I could barely
move.  I forgot that I had her wrists pinned too, but when she twisted them
I released them and she pulled me down and we kissed like boyfriends and
girlfriends do, but that's not saying much because I can't remember ever
kissing her before even as her brother.  We didn't French kiss though; we
just kissed normal, but long and hard and she seemed to like it.  I know I
did.

   At first I thought that with her legs wrapped around me like that I
wouldn't be able to do anything for myself and even though I heard dad tell
me that it wasn't all about me I still felt a little un-apologizing
selfishness growing inside me.  Then something amazing happened that
changed everything.  Angela's pussy seemed to be working my cock like a
fist and that felt great all by itself, but then I managed to maneuver my
hips in such a way so that my dick was pointing almost straight down and
almost to the point where it was bending backwards.  Now it felt really
good!

   We worked it like that for a while and then in a flash we were both
bursting with energy.  I felt a very long climax that never seemed to end.
It wasn't a pulsating one like before; it was more like one long blast like
a rocket.  Then Angela started shivering and shaking and she started really
screaming out.  "Oh yes, oh yeah, oh YEAH!"

   "Arrrrr!" I matched her scream.

   Finally it was all over and I had to collapse over her in a heap of
panting sweat breathing in perfect unison with her.

   "That was amazing!" Dad heaved.

   "That might have been very stupid." Mom warned.

   "Don't worry about it." He countered.  "It's nothing we can't handle."

   "Yeah, but what if..."

   "Woman!" He barked and after a moment of silence.  "Make me something to
eat."

   Any trepidation we might ever have had about incest never took hold
because we knew mom and dad had no problem with it.  Dad delivered Jeffery
at home and when he made out the birth certificate where it asked for the
father's name he wrote "Unknown".

   Angela did get a reputation as a slut when she turned up pregnant again,
but she took it in stride and started to act like one at school.  She
started dressing like a slut and walking down the halls like one too.

   She drove the boys crazy because when she was asked who was fucking her
she would answer.  "That's between me and them."

   "Them?" They would ask in shock.  They all suspected each other, but
they never suspected me.

   She was the first girl in our school to get pregnant, but she wasn't the
last.  After we graduated into high school we heard stories of other girls
in our middle school who were turning up pregnant and now they have a
nursery just like our high school does.