Dad takes Rob and his sister Lee on a two week camping tour of national parks, using a camper on the back of the pickup. Rob figures out that being in the back while they drive gives him a chance to take some pressure off. Lee figures out she might be able to do the same thing and uses his "sleeping" cock to feel good. When it goes off, though, it's not where where she planned. 

Codes: mf slow 1st teen cons inc bro sis het mastrb
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   Happy Trails with my Sister

   By Beating Off Bob (beatingoffbob@yahoo.com)

   It's funny how things turn out.  Seemingly unconnected events conspire
to cause things to happen and sometimes those things can be life changing.
So for my story I'll show you the "unconnected" things.  The life changing
part will become clear.

   First of all let me tell you a little about our family.  Dad is this big
beefy guy with wide shoulders and muscles a pro wrestler would be proud of.
Mom died when we were younger, but I remember she was this little slip of a
woman who was beautiful and smiled all the time.  Now that I'm grown, if I
saw a couple like that I'd stare at them, thinking he'd just CRUSH her
while they were ...  well, you know.

   My sister, Lee and I got our frames from our mother, much to my dismay.
I couldn't be a jock, so I drifted toward shop and that was a little change
that made a big difference in my self esteem.  I'm pretty good with my
hands and people know it.  But I stood by watching the jocks get all the
popular and gorgeous girls.

   Like Lee, for instance.  She has what in books would be called an elfin
face, with big green eyes.  Our mom had long hair and after she died Lee
decided never to cut her hair again - ever.  So now she has this thick mane
of ash blond hair clear down past her ass, almost to her knees.  Her
breasts are cantaloupe sized, with perky pink nipples that point slightly
upwards and were well defined even when "soft".  Her pubic hair is just as
blond as her head hair and her butt is round and soft and fat, sort of.

   Guys fall all over themselves trying to get her to go out with them. 
She had a boyfriend or two, but nothing hot and heavy.  Of course all the
guys tried to get in her pants, but from what I heard she was increasingly
adept at fending them off.

   Now I know she isn't a cock tease, because she doesn't have that
reputation.  But she also doesn't have the reputation of being a slut.  And
the guys just keep coming back, so she must be fun to be with.  Exactly
what happens on all those dates is a big mystery.  That's something a
brother usually isn't privy to.

   But back to her hair.  When she decided not to cut it, it affected the
rest of her life.  I mean long hair is a pain to take care of.  So usually
she wore it in a loose braid, almost everywhere in fact, except at home. 
There she let it flow loose.  She actually used it as "clothing" at home.
See our family had always had a little nudist streak in us.  It wasn't
intentional.  I mean we wouldn't have described ourselves as "nudists".  We
just didn't wear clothing if it wasn't necessary.  For instance, the
clothes hampers were in each bedroom.  If you're going to take a shower you
undress, but why carry clothes around with you?  So we'd undress in the
bedroom, put the clothes in the hamper, and then go take a shower.  When we
were done we'd dry off, and then go to the closet or whatever to get some
clothes to put on.  If it was summer, we wouldn't put on much.  So that
meant there were naked people walking up and down the halls sometimes.  If
Lee had a date and the clothing she wanted to wear was in the dryer or
something like that, she'd walk around the house in panties while she
waited for her clothes to be ready.  This is where the hair comes in.  All
she had to do was pull her hair around to the front and it covered her
almost completely.  I mean enough for modesty's sake.  Sort of.  There were
just two problems.

   One was that her breasts were big enough that they'd push their way
through her hair mostly.  And her nipples poked out even farther.  She
never wore a bra.  She said they cramped and hurt, which makes sense to a
guy.  I have a suspicion nowadays that one reason she didn't like to wear
them was that her clothing and her hair caressed or tickled her nipples or
something, because almost every time I ever saw them they were sticking
out, looking hard and swollen.

   The other thing is that with her hair covering her front, that left her
back completely exposed.  And she had a butt to die for.  It was her butt,
in fact, that made me sexually aware of her.  Oh don't get me wrong, I knew
she was beautiful, and I had intentionally looked at her breasts and that
soft looking patch of almost white hair between her legs.  I knew she was a
woman and I knew what guys did to and with those parts of the body.  But
the first time I ever wanted to touch her sexually it was because of her
butt.

   She was walking down the hallway in front of me, going to her room from
the shower.  Her hair was in front of her, covering her front and her butt
...  wiggled ...  while she walked.  The left cheek raised and then lowered
and the right one did the opposite.  My dick stiffened a little and I
wondered what it would feel like to press that stiffening dick up against
those soft undulating buns.

   Almost immediately I flushed red and stopped.  I even turned around and
went the other way.  Wow!  Thinking about shoving your dick against your
sister's ass!  What a pervert.

   Anyway, she never knew about that, so I was safe.  But I started
noticing her as a woman a lot more.  That was a small change, but one that
made things different.

   For example, Dad and I always wandered around the house in our
underwear. I liked briefs and he liked boxers.  But when I started noticing
Lee it caused ...  well ...  problems.  Obvious problems.

   But I wasn't about to give up comfort, so I dealt with it in several
ways.  Sometimes I'd sit down and do something, like read.  That made it
less obvious.  Sometimes I'd go into my room and whack off like mad,
shooting long strings of silvery cum into towels or whatever.  Once in a
while I'd just let it all hang out, so to speak.

   Dad was clueless.  He worked hard and we were good kids, so other than
spending some time with us he pretty well was oblivious to what went on
around the house.

   But eventually Lee noticed the bulges in my briefs.  In the beginning
she kidded me about it.

   "Got a mouse in your pocket?" she said one day while I was making a
sandwich.  I looked at her and she was looking at the front of my
underwear. I looked down and there was my half hard dick, making a nice
tent.  The funny thing is that this time it wasn't Lee who had caused it. I
was spreading peanut butter and found myself thinking about Nancy, the girl
who lived next door and wondering what it would be like to spread peanut
butter on her breasts and then lick it off.

   Don't laugh girls.  It's a guy thing.

   Anyway, Lee was staring at the front of my shorts.  What does a guy do
in that situation?  For some reason I decided to be brazen about it.

   "What?  You've never seen a hardon before?" I couldn't believe I'd said
it.

   Then SHE was blushing.  "Of course I've seen a hardon you moron." she
growled.  Then she suddenly realized what she'd said and blushed even more.


   I did the Jim Carey line "Oh reeeeaaaaaalllllllyyyyyyyy" and we both
ended up laughing.

   That was a little change, but it made a big difference in our lives. 
Because after that, if I got hard I didn't hide it any more.  And Lee
didn't kid me about it.  Well, not really.  She had these long fingernails.
There were a couple of times she put one finger down and scraped a
fingernail across the bulge and said "Your mouse friend is back".  We'd
always been pretty loose around each other, but this was a step further.

   Anyway, another change that happened that seemed unconnected was when
Dad decided he wanted to take us on a two week vacation to see the Grand
Canyon, Yellowstone, the Tetons and so on.  All the major tourist spots in
the western half of the lower 48 states.  It would be about a three
thousand mile trip.

   We liked to tent camp, but Dad said it would take too much of our time
to set up and break camp every night, so he went out and found a used
camper that would fit in the bed of our pickup.  It was old, but
serviceable.  It had a bed, a two person couch, a tiny kitchen, a
porta-potty and lots of little places for storage.  The couch unfolded into
what some salesman somewhere had once called a second bed.  It was tiny.

   The first question out of my mouth was about the beds.  It was obvious
that if Dad was in either of them, nobody else would be able to squeeze in.
Like me, for instance.  Dad said something about how somebody could sleep
in the cab and then said "Both of you will fit in the big bed anyway. 
What's the big deal?"

   I looked at Lee, expecting her to complain, but she had this faraway
look in her eye, like she wasn't paying close attention.  But she said
"Whatever" and suddenly the idea of sleeping in the same bed with my sister
didn't seem so bad.  And after all, what could happen with our father right
there, three feet away from us?

   So off we went.  It was fun.  We all sang with the radio as we drove
along, usually on an interstate highway somewhere, and we got to see some
really beautiful scenery.  The tourist traps were cool and all in all we
had a great time.  All of us could drive, so we switched off and on pretty
regularly.

   Sleeping in that bed with my sister wasn't the earthshaking thing I
thought it would be, though I did get a few hardons.  I just turned over
and put my back to hers when that happened.  I woke up a couple of times in
the night with her cuddled up next to me, an arm draped over me or
something, and that usually made me hard as a rock, but I didn't really
mind.

   Well, except for the fact that I couldn't beat off on this trip.  No
privacy.

   Then one day I got this bright idea.

   We were driving along and my balls were aching.  There had been a group
of girls flirting with me at the last stop and my imagination had started
in.  Suddenly I realized there was privacy right behind me, in the camper.

   "Hey Dad.  I'm sort of tired.  Pull over so I can get in the back and
take a nap, OK?"

   He pulled over, I got in the back, the truck started off, and I had a
glorious hour to spank the monkey all by myself.  I was having such a good
time that I put off coming.  I'd get real close and then stop.  My cock was
leaking precum all over the place, and that took off the pressure a little
bit I guess.  I'd go from one fantasy to the next, trying to decide which
one to blow my wad on.  My dick was twice the size it usually is when I
beat off, and just as hard as iron.

   That was another little difference.  I usually whacked off and came in
less than five minutes.  But not this time.  That too would end up changing
my whole life.

   I was still engaged in this leisurely beat off session when I felt the
truck start slowing down and pulling over.  Damn.  So close.  Now what?  If
I hurried I could shoot, but I didn't want to hurry.  Maybe we were just
getting gas or turning onto another road or something.

   It was hot and I had stripped down to the buff, but my shorts were
handy. I decided to peek out the windows to see what was going on.  I
pulled aside the curtains as the truck came to a full stop.

   Nothing.

   Then a flash of blond hair.  Lee was coming back to the camper!

   Shit!

   I knew I'd never hear the end of it if she found me in the camper, rod
in hand, naked.  I only had one chance.  She wouldn't think it was odd if I
was sleeping nude.  Everybody in the house slept that way.  So I jumped on
our bed, draped part of the sheet over my loins and closed my eyes.  I lay
on my side, facing the door and tried to breath deeply, like I was really
asleep.

   I hoped she was just going to get something out of the fridge and then
we'd go on.  My balls were beginning to hurt a little from the anticipation
of blowing a nut.

   The door opened and Lee climbed in.

   The truck started moving again.

   Shit shit shit!

   Now I was stuck trying to convince Lee I was actually sleeping.  I
couldn't open my eyes because I didn't know where she was or what she was
doing.

   Then she spoke "Rob?" she whispered.  Again "Robbie ...  are you
sleeping?"

   I didn't open my eyes or change my breathing.  Then I felt the sheet
being moved.  She must have lifted it up because she gasped and then said
softly "Well, well, well, he must be having a really nice dream."

   Oh man, she was looking at my dick!

   I heard her moving around and a rustling sound.  I just had to know what
she was doing, so I cracked open one eyelid just a teeny bit.  At first I
couldn't see anything.  Well, that's not right.  I could see, but I
couldn't tell what I was looking at.  Then the eye focused and I about
choked.  Lee was getting undressed.  She already had her shirt off and I
was looking at her breasts hanging from her chest as she bent over to
remove her shorts.  Then she skinned out of her panties and she was naked!

   She glanced at me, but must have thought I was still asleep.  Then she
started taking her hair down.  She unbraided it and shook it out.  Then she
looked toward me again.  I closed the eye and realized I was holding my
breath.  I started breathing again, but that stopped as she got into the
bed with me.

   Man oh man what was I going to do now?

   At first all I felt was hair.  Then she did something and the hair
disappeared.  I cracked the eye open again and saw her back right in front
of me.  She had taken her hair and pulled it all forward to her front. 
Then she wiggled backwards until she was pressing her naked back against
me.

   Then I felt that luscious soft round butt of hers press backwards
against my boner.

   I about shit.  Well, not shit, but I almost came.  I think there were
two reasons I didn't blow like Old Faithful.  First, my dick was at the
stage that it was so hard it was actually pointing toward my head.  When
she moved back against it her butt was pressing against the underside of
it, where it wasn't as sensitive.

   But the big reason was because if I squirted I'd never have been able to
explain how THAT happened, and being scared about that took the edge off
just enough.

   OK.  I know what you're thinking.  My sister has just found me in the
camper asleep, has seen that I have a monster hardon, has taken her clothes
off and climbed in bed and pressed her butt up against that very hardon. 
From your vantage point I can see how you'd think I was crazy to be afraid.


   But I wasn't thinking very straight at that particular time, so I didn't
realize what she was doing just then.  So cut me a break while I tell you
what happened next.

   You have NO idea how mind blowing this all was.  I mean I'm lying there,
my dick just as hard as its ever been and leaking like crazy.  The truck is
driving along and it must not be on an interstate because there are bumps
in the road and it curves too much.  I figured we must have turned after
all and she just ran to the back while we were at the stop sign

   I knew we were in Wyoming somewhere and were heading for a State Park to
spend the night and do some hiking the next day.  My sister's naked butt
was pressed against the bottom of my dick and her naked back was touching
my chest.  The truck rocked and my dick pressed into her extra hard.

   She had to be feeling this.

   Then she did another little thing that changed my life forever.

   I felt her hand on my hip and then it slid between us and very lightly
grasped my penis.  She rolled away from me and bent my dick down so it was
pointing right at her.  She must have raised a leg because when she rolled
back toward me my dick was between her legs.  Then she lowered her leg and
my dick was trapped.

   Believe or not - and I know you don't - I thought she had done this just
because the lump in her back was uncomfortable.  Then I realized that the
head of my dick must be right at the opening of her pussy.

   If you are a guy you know there are times when your dick gets so hard
that you can't piss.  I mean you physically cannot get a stream started. 
That's how hard I was.  I actually tried to let myself come, and just get
it over with, but I couldn't do it.  It was like my dick was paralyzed or
something.  I think I was in sensory overload.

   So I lay there paralyzed while the truck swayed back and forth and she
moved away from me and then back toward me.  Not very much, but plenty
enough for it to feel like I was fucking her.  Her legs were tight on my
prick and there was plenty of friction.

   Well, at first anyway.

   Pretty soon I realized that it was getting mighty slippery between those
legs.  a I knew I was leaking cum, but it was slipperier than that.  That,
believe or not -yeah yeah, I know you don't - THAT was the first time I
began to have a clue as to what was actually going on.  My sister, my very
own baby sister was using me to get herself off!

   It was beginning to feel good.

   Really good.

   I don't know if the hyper sensitivity passed or whatever, but suddenly I
could feel my dick again.  It was sliding back and forth between her legs
and it was all slippery and stuff and I began to worry again that I might
come.

   Then I thought to myself "Shit, she knows what she's doing, and if it
squirts she can't say she didn't expect it."

   Then I had a thought.  My dick was probably long enough that it was
actually sticking out in front of her a little bit.  I had this picture in
my head of it looking like it was HER dick and then squirting and it seemed
funny ...  but I didn't laugh.  Whatever was going on I didn't want to
interrupt it or make things change.  I was going to get my rocks off after
all, and this was infinitely better than doing it with my hand.

   Lee made a sound.  It was low in her throat.  Not a moan exactly, or a
growl.  If she'd have been a cat I'd have sworn she purred.  Then I felt
her fingers on the head of my dick and she was pressing it upward, making
it rub right into the groove of her pussy lips.  Now the glans was rubbing
right on her clit and she did moan.

   Then something else happened that was little, but changed my life
forever.  Dad hit a bump hard and swerved at the same time.

   Yup, the combination of that and her pushing it into her opening made my
dick slid right into the mouth of her pussy.

   It only penetrated her an inch and a half or so, but that was all it
took.  A couple of days worth of horniness and a set of overflowing balls
were released in the split second it took for my brain to register that my
dick was in my sister's pussy.

   Then I DID blow like Old Faithful.

   And, since I had all the instincts that Homo Sapiens was equipped with,
when I felt the first jet leave my penis and blast into her pussy, my right
hand gripped her hip and I pulled her into me.  My hips flexed and I buried
it another two or three inches in her.  Man oh man did it feel good.  Those
jets of silvery sperm-laced semen shot up into Lee's pussy.

   She squealed as she felt my dick go into her and then went "Ahhhhhhhhhh"
as she realized it was shooting off in her.  But there wasn't anything she
could do about it.  Her hands were in front of her and she had nothing to
grab to pull herself away from me.  The only thing she could have done was
just roll off the bed fromtwards and sprawl into the aisle.

   I think maybe she had some instinct too, because as I felt my third or
forth shot fire off into her I felt her pussy clamp down on my dick a
couple of times.

   Then in true to form teenage fashion she squealed "Robeeeeeee!" like I'd
stop or something.  Well I did stop eventually, but only after every drop
of my potent sperm had been implanted fairly deep in her sweet soft pussy.

   Since all pretense of my being asleep was blown, I said "Wow".

   Now she moved.  She DID roll forward, right out of bed, and fell on the
floor.  She scrambled to her feet, flipped her mass of hair over her
shoulder and stared down at her exposed pussy, sort of squatting bowlegged.
A big glob of white sperm came flowing from her pussy lips and hung, before
it slowly began to form a huge teardrop and fall toward the floor.  She was
panting hard and red faced.

   Then those green eyes rose up and locked on my face.  "Roobbbeeeeeee ...
YOU CAME IN MY PUSSY!" she yelled.

   Now I don't know if I was still hard - I wouldn't have been surprised,
considering how horny I had been - or if seeing my sperm dripping out of my
sister's pussy had gotten me hard again.  At any rate, my dick was standing
tall again, pointing right at her.  At her outburst I decided to call her
apparent bluff.

   "Yup" I said straight faced.  "I sure did, and I want to thank you,
cause that was awesome.  By the way, it's getting all over the floor."

   It was comical to see her look back at her pussy and then at the puddle
that had dripped on the floor.  Her hand slapped to her pussy to keep any
more from coming out and she said "Shit!  Dad will kill me."

   I did laugh at that.  The absurdity of her thinking he'd blame HER for
MY cum being on the floor was too much.

   Of course SHE didn't think it was funny at all.  She started to yell,
but the truck lurched again and she fell toward me.  I caught her, getting
a nice handful of soft tit in the process.  Her face was right in front of
mine.  Imagine my surprise when all of a sudden my sister kissed me.

   And I mean KISSED me.

   It was a lip lock to remember.  It started out all soft and rubbery and
very quickly went to each of us trying to suck the tonsils out of the
other. Then she was laying all over me, rubbing her breasts against me and
moaning.  She finally broke the kiss and pulled back a whole three inches.

   "You bastard" she said in an almost normal voice.

   I tried to look hurt.  "What?" I said "What did I do?  All I did was try
to take a nap."

   She wasn't buying it.  Those green eyes bore into mine.  "You do know,
don't you, that I didn't come." she said, her voice still level.  "You got
your rocks off ...  IN me I might add, and I didn't get anything.  that's
not fair."

   I got the feeling she wasn't actually all that mad at me.

   "Well, as your brother, I want you to be fulfilled, so I recommend you
do something about that.  I'm more than willing to help if you can think of
any way I can BE of help."

   She kissed me again, this time a quick one.  "I knew you'd understand."
she said cryptically.

   Then she straddled me, put my dick in the entrance I had so recently
vacated, and sank down on me with all her weight.

   I hadn't thought about the fact that she was a virgin.

   When I blew my wad in her, I wasn't exactly thinking about her hymen,
and, in fact, hers was already gone for the most part.  But she was still a
virgin, and she'd never had her pussy that full of anything before.  So,
when her full weight dropped onto my boner she winced, and once she was
fully impaled she sat still, her hands on my chest.

   She was tight.

   But the "lubricant" I had left behind made her first full penetration a
lot easier.  She sat there for maybe a couple of minutes before she rocked
back and forth a couple of times experimentally.  She leaned forward and
rocked and she purred again.

   I knew her clitty was being massaged, and that she had full control over
how much, so I just lay there being a hard dick for her.  It didn't take
long for her discomfort to fly away and then she started having a good
time. She raised up and then flopped back down a couple of times, each time
going "Ohhhhhhhh" or "Ahhhhhhh", but mostly she rocked.  That was really
nice for both of us because my dick was long enough to reach clear to her
cervix in that position, and when she rocked the head dug into her cervix
and massaged it.

   And vice versa.  I had been doing just fine, having cum so recently, but
when her cervix started kissing the head of my prick my balls started
making more semen on overtime.  Her hair fell forward and made a tent.  It
was caressing every part of my chest and face as she rocked back and forth
and that got me even hotter.

   I saw one of her perfect breasts in front of my face so I leaned up and
latched onto the nipple, sucking hard.  "Ooooooooo keep doing that" she
moaned.

   I got my hands busy on both breasts, squeezing her puffy pink nipples,
pulling them and then licking or sucking them too.

   "Yeahhhh that's it ...  you're doing it ...  I'm gonna
...yeahhh...Ahhhhhhhh...OH ROBBEEEEEEEEE" And then she came.

   She came like a bomb.  First she stiffened, and then her hips jerked
back and forth about four or five times hard enough that I thought she was
going to rip my prick out at the roots.  Her pussy started doing the
milking maid thing, rippling up an down, squeezing my dick, saying "Come on
pretty penis, and give me a bath." Her head was whipping back and forth,
which meant there was hair everywhere, flying through the air, making a
cloud all around us.  I think it was the sounds she made that got me off
though.  I can't even describe them, except to say she sounded happy -
really happy.  So I came with her.

   This time it wasn't explosive.  I felt it start deep in my balls and
travel up through my prick.  My dick pulsed and a long string shot out.

   "I'm mating with my sister" I thought.

   Another gooey rope lanced into the mouth of her cervix.

   "I'm pumping my sister's virgin pussy full of my spunk."

   Her weight came down on me and my dick head spat a pool of sperm that
got trapped, soaking her cervix and being sucked into her womb.  Two more
surges of my seed flowed.

   "My sperm is the first sperm ever to enter her womb." I thought.

   My balls ached as they tried to supply even more fluid to shoot into my
sister.  But I was done.

   She was leaning over me again, her face close.  "Thank you Robbie" she
whispered.  "I knew I'd like it if I did it with you."

   "You're more than welcome" I said back.  "I stand always ready to serve
your needs."

   Her pussy muscles squeezed my softening dick.  "I have a feeling I'm
going to have some pretty intense needs." she said smiling.  "And we only
have another week and a half to go."

   I don't know if dad noticed or not, but we took a lot of naps on that
trip.  
