OK but River denying Whitney the opportunity to go to the bathroom during class. Whitney deciding the best way to "distract" (he knows exactly what he's doing.) himself from the need to pee is for you to suck him off.
giving Whitney a blowjob in class but after he cums he decides to use your mouth for something else. Keeps his cock deep in your mouth by gripping your hair and giving you a grin. You're his slut aren't you? With such a warm welcoming mouth, you won't mind will you? He really needs to piss and River is so cruel and won't let him go. Besided he's too tired, too lazy to stand up and just walk out so be a good girl and swallow as he empties his bladder.
It’s way harder to piss if he’s hard, so you better help him out here.
Heart pounding in your ears, you try to get Whitney off as soon as possible. It’s doubtful you’ll ever be able to do this with the same air of nonchalance as him. His hips buck into your mouth, and you just barely keep from gagging. Over time, you’ve figured out exactly what he likes. Even if it makes your jaw ache. You swallow down his cum without hesitation, but he forces you back down when you try to pull away. Your mouth is so warm, and now that he came, the urge to go is even worse. Do you really expect him not to take advantage of your hole, when you’re already drooling around his cock? This is way easier for everyone involved, no one has to move. He hisses at you to stop moving, slut. He isn’t done yet.
It takes a moment, but he soon lets go with a soft groan. His bladder had been so full, the amount of piss immediately floods your mouth. You tense up, sputtering around his cock. Whitney’s nails scratch at your scalp as drops leak past your lips. You tear up, face warm. Half of the class must’ve noticed your boyfriend peeing in your mouth, considering you can feel them stare and hear their whispers. Glancing up, and you find him grinning down at you, savouring your expressions. As his stream dies down, he’ll pat your head for a job well done. He looks almost sleepy after, thorougly pleased and lazy.
Even after getting up and wiping your mouth clean, all you’re able to taste is him. River turns to Whitney as soon as they’re done explaining the material, telling him he can go now. He laughs, joined by some classmates, and tells them that it’s fine, he doesn’t have to go anymore. He got some help already. As soon as he has the chance he’ll whisper to you that you’ve got such a nice mouth, he should use you as his personal urinal more often.