When you're doing something musically and accidental get off beat.
Tim: "*1-2, 1-2, 1--2*"
Jon: "Wow Tim, you're really beating off!"
When two guys stand face to face, with a third guy in between them jacking off both guys at the same time. The first guy to jizz wins the prize of getting a cold, metal dildo
Jason won beat off when tony gave him a hand job that he couldnt resist
1. A total loser; a completely pathetic and lame person, usually obvliious to how much balls they suck.
THis can also be used as an adjective.
"That dude over there thinks he's hot shit, but he's a total fucking beat-off."
"Yeah, man. This party is totally beat-off"
when man is horny and taks it off his bake buy beating off
ohh dam she was fine i am going to beat off now
when a girl puts a trashcan between her legs and rubs on it
She's beating off and laughing about it!!
When you get a hand job while your dick is in a tub of popcorn at the movies.
“Put your Dick in the popcorn. I wanna give you a butter beat off”