Top Definition
another form of mother fucker but more applicable to when you fuck something up
John: Dude you totally missed your bus. You are such a dumb-ass.
Drew: MOTHER FUCK-ASS!!
by wufei September 09, 2004
1 more definition
an insult meaning your mother likes intercourse from the rear
ay you bastard mother fuck ass
by sunny indian May 10, 2006

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