i had a cum joke that i've forgotten

"What are you doing! Get off me! Wait till the headmaster hears about this!" River's angry tone was tinged with fear. Normally he'd be fine straightening out unruly students, but there was a feral ferociousness to your actions, pinning him down and draping your body over his.

He froze up at the feeling of your cock twitching in your trousers.

The hot feeling of your tongue, laving over his neck, shocked him out of his stunned horror, feeling the sharp of your fangs dragging over his skin. It paralyzed him, but not with fear. He felt his cock twitch and shame flooded him. This deep, disgusting, hidden side of him shouldn't even be apart of him, and yet is reared its ugly head from time to time, leaving him hard and horrified and refusing to touch himself, willing it to go soft. His own panic at his arousal made him deaf to the sound of unbuckling, his trousers being slide down to his knees, showing his drab boxers.

He was jolted out of his own head when he felt a hot, rough tongue laving over his ass, saliva soaking into the fabric of his underwear.

"S-Stop that this instance!" He struggled to find the authority he used on his class, but his wobbling voice failed him.

You ignored him, gripping his hips in case he fainted like he would do time to time in class. Him being unconscious wasn't going to get him out of his punishment. That's what you thought until your tongue dragged over his balls, and you felt his hard, jutting cock, bobbing shamefully. With an intrigued huff, you grabbed the band of his boxers with your sharp canines and ripped them clean off, making him yelp and attempt to kick you, to no avail.

His cock was fucking tasty. Still slowly hardening, and admittedly, nothing like your virile mutt cock, but still. Full balls, throbbing desperately, probably been a while since they were drained. You drooled at the sight, saliva dripping off your tongue and sliding down his balls, making River shiver. His cock was uncircumcised, which struck you as weird, or at least your human brain thought so. Temple boys are circumcised, but River had his delicious head, dusky pink and dripping, just barely peeking out.

Grabbing the shaft and ignoring his yelp, you hungrily slobbered over his cockhead, not even properly tucking it into your mouth. Dragging your tongue over the sensitive skin, drooling all over it. River can't help but to moan into his forearm, shutting his eyes to try and escape being molested by a dogboy, but it just added to the sensation, your hot tongue feeling too good for him to even comprehend.

The sound of you eagerly stuffing his cock into your throat, the squelching and wet noises should disgust him, they do, they do, but his balls still throbbed with every loud lick. River had never had anyone do this to him before, he himself never even masturbated too much, too afraid of being struck down or found out. This was a horrific wet dream that he swore he wanted to wake up from, but it felt way too deliciously real. Worst of all, he knew he was going to cum like the virgin he was if you continued molesting his cock with your tongue.

You must have felt his balls throb alarmingly, because you finally let his cock fall from your mouth, swaying between his thighs once more, dripping with saliva and precum. River gave a sigh of relief, until he felt something hot, and fat and too big to be your tongue, against his ass.

"S-Stop this now, y-you've done enough. We won't talk a-about this if you- Ah!" River cut himself off with a moan, arching his back as your drooling cockhead shoved into his barely prepared hole, immediately making his knees shake. He would have collapsed fully if you didn't haul his hips up, actually standing up fully, forcing him into a humiliating ass up, face down stance.

You didn't waste a moment. Leaning your head back, you shut your eyes to enjoy bottoming out in this tight, virgin hole. River's loud moan was a surprise to only him. Your warped cock filled him up, but didn't rip him, and the pleasure was already fogging his brain. Precum was steadily dripping down, pooling on the supply closet floor, staining the ugly grey-blue carpet.

"Fuck... Fuck!" River whispered, cussing for the first time since he was far younger and smacked around the head for it. But he couldn't just not use the most applicable word for this.

He was being fucked. He was fucked and being fucked by a student who could fuck well.

The skin against skin slapping sound was wet and loud, barely muffled beyond the door as you fucked your Maths teacher ass open, ruining him a way that no one else ever could. In a way where he couldn't be able to sit down without thinking about the way his ass has been molded to half feral cock, and a voice will always whisper to go tug your ears again.

Your hungry panting was music as he was fucked, almost bred as you asserted your dominance over him in a way that he would never be able to forget. You just groaned out profanity, calling River your bitch, telling him this is what happens to mutts who try and take over as alpha. You were the one in charge, and he could do nothing but groan and moan and agree.

River wasn't going to stop you. His ass being slam fucked until numb, even as the pleasure goes straight to his cock, was ruining him. Fuck, he wasn't going to stop you. Even as your knot swelled and plugged his ass with cum he wasn't going to bat you off, not with his own cock cumming hands free. And even then, as you continued to hump into him, he just welcomed it, much to his horror.