Posted originally on the Archive_of_Our_Own at https://archiveofourown.org/
works/109691.
  Rating:
      Explicit
  Archive Warning:
      Underage
  Category:
      Other
  Fandom:
      Harry_Potter_-_Rowling
  Character:
      Harry_Potter
  Stats:
      Published: 2010-08-27 Words: 699
****** Harry Potter and the Pretty Pony ******
by ishafel
Summary
     Harry misunderstands his Potions assignment. Harry/ Thestraal.
     Bestiality.
Harry always gets stuck with all the squicky jobs, so he knows even before
Snape says it that he'll be the one assigned to collect the Thestraal semen,
and he wants his Potions N.E.W.T. so off he goes to the roof with Snape's glass
vial clutched in his hand. He hasn't much trouble catching one of the
Thestraals; the one Dumbledore calls Lemon Drop trots straight up to him as
soon as it gets a whiff of the rotting meat Harry holds on the flat of his hand
and while he's eating it Harry slides his halter over his ears and tethers him
to the fence. He runs a hand gently along Lemon Drop's gaunt flank and gulps
when the Thestraal snorts.
But Lemon Drop is well broken and Harry is brave, and is not long before
Harry's fingers edge along the Thestraal's stifle, now going up, up, toward his
goal. Lemon Drop ignores him, chewing peacefully on the carcass of a largish
cat Harry's put in his feed tub, and Harry is afraid for a moment that he won't
be able to get the beast aroused at all. His fingers are on the Thestraal's
sheath now, gently squeezing and rolling the soft skin. Lemon Drop snorts again
and his penis begins to emerge.
It is enormous and black, and even half erect it is wider than Harry had ever
imagined such a thing could be. His hand does not quite go around it, and both
of his hands are less than half the length. For the first time Harry realizes
what it means to be hung like a horse. He has seen pictures of a woman having
intercourse with a Thestraal, and what was once moderately titillating now
seems an accomplishment worthy of respect.
Harry strokes the Thestraal and marvels, as it grows steadily more aroused. His
own cock stirs, in his pants, but he dares not take the time to touch it. He
plays Lemon Drop's penis as though it were a flute, and tries not to think
about what he is doing, tries not to be excited by it. After all, it is a
natural function. The penis is very smooth in his hands, very warm.
He wonders what it tastes like. After all, he may never have another
opportunity like this. And he can see it is very clean, the skin healthy and
taut, the slit leaking copious amounts of fluid. What can it hurt, to try it?
It is simply research, that's all, scientific in nature. And it can only help
his mission. He licks gently around the head of the penis. Lemon Drop turns his
head to look, making a tiny whickering sound deep in his throat. Harry
continues to slide one hand up and down the Thestraal's cock, while the other
reaches up to roll the Thestraal's balls gently in loose sheath.
Lemon Drop's penis is now fully erect. Harry has to fight to keep it from
bouncing up against the Thestraal's belly. The fluid tastes faintly sweet, and
Harry can't help licking his lips. One hand dives inside the waist of his
trousers and frees his cock from his pants. Just those few seconds of his own
hand on it nearly makes him come. Lemon Drop is clearly close to coming; he's
too well trained to thrust against Harry but he's very nearly bouncing on his
hooves.
Harry feels lightheaded. He readies his jar, gives Lemon Drop's balls one last
rub, and prepares to finish the job. Behind him an amused voice drawls, "No
wonder it's taken him so long. He must have forgotten he's a wizard, and tried
to do it the Muggle way. Here, Potter, let me help. Disseminate!" Harry
freezes, trying not to breathe, but it's too late. Lemon Drop's semen spatters
the jar and Harry's semen spatters the inside of his robes. And while he
struggles to recover from the best orgasm of his life he hears Draco Malfoy
suggesting he hurry up, that Snape wants the sample straight away. Harry's
tempted to turn around and hex him, but he waits for Draco to go. He has a
suspicion there's come on his chin.
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