a bum crumb ass nigga is that one nigga who thinks they the shit but actually fucken ass at everything they do, video games, school, and hell, even making friends. You can tell if somebody’s a bum crumb ass nigga if they wear their beanie at the top of their head with the top of the beanie all raggy n shit. They also wear baseball caps backwards and sitting on the top of their head so that they seem to have a tall head, bc their heads are small and their brains are small, and end up looking extra retarded.
Person 1: damn yo Damian is a fucken bum crumb ass nigga
Person 2: what do you mean?
Person 1: I mean just look at how this bum ass nigga wears his hat! Wtf!?
As defined by Twitch user silversquid1414 on a TommyNFG stream that took place on the 28th of March 2024, a "cumbass" refers to a guy who is stupid, bad at video games, and can jerk off in a matter of seconds. It means short, weird, and a freak, and more.