Note: This story was dynamically reformatted for online reading convenience.
 
 A Very Dirty Girl (MF anal scat ws)

   Description: a girl gets punished for being dirty, but the punisher is
just as "dirty" as she is.

   ...

   "You've been a very dirty girl", you say, panting, as you kiss me
passionately, your tongue jutting in and out of my mouth, tongue ring
flicking at my lips, arms clutching me tightly around the waist.  Somehow
the button of my pants is undone, and your hands are snaking their way up
my untucked shirt, following the curvature of my hips to my ribs, then
inward to the soft, fleshy mounds of my breasts, the pink areolas hard and
perky, greeting your fingers.

   "You didn't study for your test, AND you stink.  I think I'll have to
punish you for that." You pull at me, and we stumble into the bathroom,
door slamming behind us.  I am shoved against the sink as you grab my shirt
and yank it over my head, and, taking your own shirt off, start the shower.
You are fully naked and your arms encircle me, feeling my back, one hand
sliding down past the loose belt line over the round globes of my ass.  You
linger there for a while, then pull my pants and underwear down, finding
them wet and sweaty.  Then I am naked in front of you and you stare me down
hungrily.

   Then you grab my hand and pull me to the shower.  Once there, you
suddenly turn soft and passionate, coming up behind me and putting your
arms around me.  I feel your hardness gently nudging my behind.  Then you
take a handful of soap and begin to lather me down until my entire body is
covered in slippery soap suds.  Then you hold me tight and I feel your body
sliding against mine, hands slithering up and down, cupping my breasts,
sliding over my stomach, slipping down into the folds of my sex and back up
again.  Your head fits perfectly in the crook of my neck, and you kiss my
neck, biting and suckling gently.  Your 7 inch member is thick and solid,
moving up and down the crevice of my ass, slick from the soap.

   ...  and then, suddenly, your grip tightens and the head of your penis
forces itself against the sphincter of my anus, and, with a slight pain and
sudden filling sensation, bursts in.  I cringe and gasp in shock, and then,
as you slowly begin to fuck my ass, loosen up and start enjoying it.  I
bend over slightly to receive more of your length, and you begin to go
harder, ramming into me with ease.  You slide the length of it almost to
the opening, then slam it back in.

   As I get more and more into it, I begin to feel a cramp in my stomach
and moan with the slight, tell-tale pain.  My lower abdomen gurgles and
shifts inside.  I look at you with worry in my eyes and hesitate.  You
acknowledge this, and then fuck me harder, further in, keeping the whole
length inside, balls slapping at my ass lightly.  You know what's coming.

   As my bowels begin to give way, you whisper in my ear in a husky voice:
"You've been a very, VERY dirty girl..." At this, something in a different
part of my body drops and tingles, and I feel the wetness dripping out of
me.  As he renews his full-on fucking, not even pausing anymore between
thrusts, I start to bear down, pushing with my gut.  I feel something
semi-solid slide down my tract - it's big, and I feel so full, I'm almost
bursting.

   I feel you come into contact with it as I push, and it squishes around
your hardness, covering you with a thick layer of chunky, smelly shit.  It
cakes onto the sides of your penis and becomes an extension of it - and now
I am being fucked with not only your penis, but my log of poo as well.  I
push some more and you begin to squish through it.  It squelches and mushes
in my ass, churned well.  Soon, it has run down to the opening, and I feel
it coming out of my hole, smearing over my ass and your balls.  Instead of
the smooth, slippery feeling of your penis, I now feel the rough, slimy
chunks of poo fucking my ass.

   This sensation instantly makes me pant and convulse, and I know I'm not
going to last much longer.  You realize that I'm close, and you begin to
thrust as hard and deep as you can while pulling all the way out,
re-entering me with every thrust.  The tip of the poo escapes for a little
while, only to be jammed back in, some of it squishing out to the sides and
sticking to my ass.  The heat is building in my nether regions, and with
one last thrust, I'm gone - it hits me hard, and you grasp me tight as my
limbs succumb to the full-body pleasure of the orgasm.  Your poopy penis
pops out as my sphincter contracts, shitting you out.  I count the pulses
in ecstasy: ..10..11..12...  13....  14.....  15.....

   It fades, and I'm left panting, body in pleasant exhaustion, still
reeling.

   ...  However, you're not done with me.  I've been a dirty girl, and
you're determined to show me just how dirty I've been.  As I finish
cumming, you spin me around to you and shove me against the wall.  Your
cock still stands proudly, now fully covered in a thick, chunky brown
stench.  You hold me tight, looking into my eyes, and then, in one go,
shove your filthy cock into my pussy.  My eyes roll back as you fuck me
furiously, tainting my sex with my own filth, playing rough.  In five swift
strokes, you begin to cum and I'm cumming with you a second time at the
sheer dirtiness of it.  But before you go soft, you slip it out and slide
it back into my ass, hugging me in a tight, filthy embrace.  You kiss me
gently...  and then you release your full bladder into my churned bowels.

   Taken by surprise, I yelp and squirm, but you hold me fast and get it
all up there, until, once again, I'm full to bursting.  You hold me there
for a while, torturing me with this new sexy discomfort, and then you growl
softly into my ear:
   "You've been a very dirty girl...  Now.  Let's clean you up..."