Top Definition
1. One who follows the guidelines, rules, and regulations of Mattitude; a Mattitude Follower.

2. A word used to censor yourself while trying to say "motherfucker".
1. Shannon Moore is an MF'er

2. I'm gonna kill that MF'er Johnny!
by Ryder October 09, 2003
short for mother fucker
He is such an incredible m-fer. I can't believe he talke to me like I was 8 years old.
by WordPak Revisited December 30, 2011
Short word for; Motherfuckers
Those MFers over their are annoying as hell. We should get away from them.
by acchill April 10, 2016
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