Top Definition
A rare disease in which your butt crumbles into pieces from being butthurt. There are several stages at stage 5 you will need to operate at stage 9 you will need the iron butt and at stage 11 there's nothing more that can be done for you god have mercy on you soul.
Person one: Have you talked to Josh lately?
Person two: nah, that guys Crumblebutt is like stage 11.
Person one: more like crumbleasshole that fucker can't take a joke.
by Anony45 February 22, 2014

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