Top definition
A shortened term for 'mother-fucker' but also in l33t, using zero's instead of plain 'O's.
What up m0f0? - What's up mother-fucker? (a greeting)

Fuck you, m0f0! - Fuck you mother fucker! (an insult)
by Bloggz November 16, 2003
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The vengeful act of crapping on a lover's chest while they sleep.

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