When your out wasted and all the sudden you feel that urge to jump into the arms of another man and you faceplant on the concrete. After the faceplant you are a mothface.
Joe jumped into Matts arms, and Matts frail body couldn't hold him. Joe is now a mothface.

"Damn Joe! You're a total mothface now! What happened last night??"
by Markatak May 29, 2007
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