14
1)Eating cookies or toast over someones ass.

2)A fucking moron; a Douche
I apologize for the CrumBum last night.
by MrBlack1984 July 01, 2006
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16
A person or thing that actively seeks out other people's leftover crumbs.
That chip barely hit the floor and that crumbum of already ate it up.
by BluJ November 27, 2019
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