Top definition
Noun
1. When one eats food in a vigorous manner, and gets crumbs all over their face. Mostly on their upper lip.

2. Crumbs on your mustache. (or mustache area)
Person 1: AHHH i love cookies! Nom Nom Nom

Person 2: Ahaha i know, you have a cookie crumbstache.
by S.MF.L January 09, 2011
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Cleveland Steamer Plush

The vengeful act of crapping on a lover's chest while they sleep.

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