beating on

Jacking ON your tiny weewee.

Person 1: Dude, can you stop beating on so early in the morning? I can hear you moaning, your bed squeaking, your headboard slamming against the wall, and the angry relieved sigh that you give when you're satisfied and presumably blast your nasty shit all over your cum stained bed. I'm trying to get some sleep, dammit!

Person 2: I'm not beating on , Shaun. I'm getting some pussy, like a real man. You might want to try it sometime.

Person 1: Oh...