Crumb Bum /krum bum/ n. A Bum that lives solely off of Crumbs.

or a Bum that is very Crummy.
1: "Mary tries to catch the train before the Crumb Bum gets there and asks for money or food".

2: "Man that guy's shoes are so shot, You'd think he got them from a Crumb Bum! "
by DALLAS JOE October 3, 2018
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Residue of toilet paper left on someone’s behind after wiping.
“Did you know kyle’s dad’s “bum crumbsfloat up to the top of the water when his dad has a bath
by November 30, 2021
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