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Shortened version of the phrase, "Motherfucker".

Popularized by AxE and Samurai of WhatNET.
Those mofackas owned us.
by Ted Berg April 15, 2004
3 3
Vinnie making Churro's.
Vinnie is such a mo facka when he's working at Cart #1.
by lolz April 28, 2004
3 6