Crumb Bum

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! "

Bum crumb

Residue of toilet paper left on someone’s behind after wiping.

“Did you know kyle’s dad’s “bum crumbs” float up to the top of the water when his dad has a bath”