Hippogryphs are dangerous creatures

Buckbeak was uneasy and looked into Harry's eyes very intensely, as if trying to win a staring contest.
Had Harry been more attentive during Care of Magical Creatures classes instead of daydreaming about Quidditch
so much, he might have realized that such staring is how hippogryphs establish domination hierarchy during
their mating season.

"Let's just get his food and get back to the Tower" said Ron, "before anybody finds out we're gone".
Harry turned to Ron - "Oh, what's the matter, being a little wimpy Hufflepuff today"?
Harry almost felt bad about manipulating Ron like that for a moment, but it always worked -
Ron's face predictably turned as red as his hair, making his freckles almost disappear.
"Now stand back, I want to fly on it".

Ron was undecided what's worse - getting caught and suffering a few weeks in detention, or being a "Hufflepuff wimp".
"You're mad, mate! Hagrid told us to just feed him and get out of here", he answered with his best attempt
at stern look, but didn't make any move to stop Harry from untying Buckbeak.

Hippogryph's muscles tensed and the moment he was free he jumped onto Harry and knocked him on the ground.
The boys didn't except anything like that from the normally rather friendly animal - but this was his mating
time, and he was as horny as someone who was a year overdue for some good fucking - which was actually the case.
His claws teared Harry's robe and his massive dong - so far hidden in his feathers - jumped out and plunged straight
into Harry's asshole - not bothered at all by puny resistance offered by his underwear or sphincter.

Harry wasn't an anal virgin - while he was more into girls there was always some experimenting going on in
every boys' dormitory. In spite of that, he was wholly unprepared - for hippogryph's cock was not like smooth
boys' cocks. It was as big as a forearm, tapering towards the head, and all covered with ridges and large dots.
Viscous fluid was oozing from its head, and together with blood from Harry's torn sphincter lubricated the
rectum and let the cock thrust.

Ron took his wand out and tried to rescue Harry, but fear - mixed with more excitement than he would later
admit - clouded his mind - and the best Stupefy he could cast was barely even noticed by the hippogryph with a
shrug of his wings, at which point Ron dropped his wand and fell down to the floor and started crying.

At first Harry felt only pain, but his repeatedly ravaged body numbed, and the pain was gradually replaced by
arousal mixed with shame - a common rape victims' combination. Finally Buckbeak's semen loaded with very strong
pheromones paralyzed him completely.

Buckbeak was far from done - he pulled his blooded cock out of Harry's ass and looked around for the next objects
at least vaguely resembling a female hippogryph - he wasn't exactly choosy after abstinence so long.
It could have saved Ron that a crying and shivering boy looked nothing like one - but Ron in his cowardice
did the dumbest thing and tried to run away. Hippogryph was in no hurry this time. He leisurely spread his wings,
rose to the sky, and then dove down and grabbed Ron with his huge claws without even slowing down.

His grip was gentle but firm - as far as his tiny brain knew, Ron might have been the new mother of his hatchlings.
Yet Ron's body was nowhere near as tough as a hippogryph and blood seeped from wounds made by the claws.
Buckbeak wasn't sure about what he held - it didn't at all look like a female - and for a moment it seemed
like he might just discard Ron's body and fly seeking a more fitting target. Fortunately for Ron the hippogryph
decided to err on a side of fucking too much rather than too little, and somehow figured out how to impale Ron
upon his still erect cock, and slowly slid in and out in rhythm of his wingbeat.

In a way Ron was far luckier than Harry. Ron's body was limp from fear and resignation, and the cock was all
very well lubricated with semen, so entry didn't hurt nearly as much as it did hurt Harry.
And while on a ground the beast was fierce and merciless - now the needs to stay balanced in flight and not
drop Ron ensured that the thrusts were slow and steady. In a way, this luck was illusory, as it denied Ron
this strange tranquility into which minds fall to protect sanity once all of bodies' thresholds of pain are broken.
Harry hardly remembered anything that happened after the first few seconds - but Ron could recall every single
thrust till the day he died.

A wave after wave of sensation travelled from his entrance further inside than he thought possible,
with every cock ridge on a way in creating ripples of pleasure emanating from Ron's prostate,
and on a way out sucking Ron's internal organs out of their proper places - or at least so it felt.
Ron's arms and legs were floppy but his cock was hard - pulsating in slow rhythm of Buckbeak's ramming.

Pain near but not beyond the threshold of numbness, oscillating anal sensations, and utter helplessness
all worked together to make Ron feel more aroused than he even felt before. Soon his semen exploded covering
both him and the beast - and resulting anal contractions made the hippogryph come just a moment after.

The beast was exhausted by the flight and returned to his nest in Hagrid's hut, leaving Ron next to Harry,
and then fell asleep, dreaming of two piles of hippogryph eggs that would hopefully result from this night's
successful mating.

The boys thought the night couldn't get any worse, when alarmed by the ruckus came Severus Snape.
He bound the hippogryph back with quick flick of his wand, and instantaneously realized what has
happened. He wondered how much he can humiliate Harry and his pack out of this without causing
Dumbledore's rage - and decided the opportunity is too good and he doesn't really care that much
about Dumbledore this time.

Snape took out a magnifying glass and muttered an incantation which made it start making moving pictures
of Harry - with a shot or two of Ron and Buckbeak. Once he was happy with his collection which was of course
meant for "documentation purposes only" but which he knew would mysteriously "leak" once he dropped a right
hint here or there - he charmed Harry's and Ron's internal organs into a state which at least allowed
them to reach Madam Pomfrey's wing, cast Ennervate on both, and quietly left before they woke up.

He was as happy about it as the Hippogryph.