Just cum in your trousers

You decide you might as well just say fuck it and cum in your trousers, and you continue, desperately dry humping her as you hit your crotch against her ass repeatedly as you groan, before finally pressing her ass against your crotch and frantically grinding your dick against her. You speed up in your grinding, rubbing her soft panty-clad ass against your cock. Finally, you groan in ecstasy, spurting your load in your pants as you slow down in your grinding, before sighing and pulling back from her.

With yourself relieved, you're no longer particularly bothered with dry humping. Also, while it's too dark for anyone to see if a wet patch emerges, if someone felt it you know it would immediately translate to a really shitty nickname, like "Spunk Pants" or "Early Bird" or just something as basic as "Faggot that came in his pants". So, you decide just to enjoy the time being. You continue dancing around for a bit, enjoying the various tunes played off whoever's iPod and belting out all the old classics that everyone knows all the words to.

Eventually, you decide it's about time to head off and find something else to do, and you head out from the dance floor to the hallways.