Beater's leg is when you beat your meat so hard that one or both of your legs go numb.
Eryc: Bro, i was sitting on the toilet and beat my meat so hard my left leg went numb bro. And my dick got a little swollen too bro. It caught a case of beater's leg bro.
When you thrust in a uncontrollable way while shouting beaver's ooooh. Orginated off Soccer am Allsports Show when one of the presenters who supported the oregon beavers thrusted while shouted beavers oooh and now its god dam legend
Presenter1: I reckon Beaver's are doing well this season........
GO! Beaver's Oooohh (thrusting actions)
Presenter2: your not allowed to do that
Presenter1: ok srry.................(walking away).........
Beaver's Oooohh (quick sneaky thrust)
when you are eating out a girl's asshole and it gets so intense that she shits all over your face, especially when she has diarrhea. you then take the shit and make it into a batter, and make brownies.