A bum crumb is an object that is forced up your buttock when yousit on it. It can also be spelt like this: bumb crumb.
What happened doctor? Oh you had a rare inconvenience called a bum crumb also known as the bummeth crumbosis it is when an object becomes suck up ones buttock when they sit on it.
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!?
A term of utter contempt for a worthless, meretricious person, a no-account, with the implication that s/he is of low moral character.
A "bum" has long been an Americanism for a tramp, vagabond or homeless person (and lacking in the "backside" meaning as in the U.K.). The "crumb" may come from the irritating or useless character of bread crumbs or toaster crumbs, but it is possible (despite the spelling) that the first syllable derives from "crummy" as in worthless, detestable. The internal rhyme solidifies the expression.
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"I have no use for my daughter's ex-husband. Ever since the divorce he drifts from job to job and is always behind on child-support payments. He doesn't even send his child a birthday card! As far as I'm concerned, he's a complete crumb-bum."