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Anything that is falling to pieces.
That bitch was so drunk last night she was crumbed.

That car is crumbed, its falling apart.
by Ron S....... June 20, 2008
When someone sneezes crumbs at you
dude1: *sneezes*
dude2: Dude you crumbed me right in the face!
by Maimz November 03, 2009