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1.
n: Fast Ass Mother Fucker, One who possesses super speed, one who has the ability to run and move extremely fast, one who possesses superhuman reflexes and seemingly violates certain laws of physics.
Parker: Damn Usain Bolt is so fast
Patrick: He must be a FAMF
Parker: Yeah just like us when we won the 4x100m relay. we're FAMFs too!
by Parkrick December 15, 2009
 
2.
n. (alternate) Can also mean: fat ass motherfucker.

1. Damn, that guy is still eating? What a FAMF!
by Craig B. December 30, 2005
 
3.
Term used to describe a Fat Ass Mother Fucker. Can be used to describe any person seen as "obease", usually with multiple chins or a stomach that hangs past the belt. "Fat"
Quentin- "Hey Felipe, look at that F.A.M.F over there, it looks like its upset that it doesn't have its doughnuts yet."

Felipe- "Damn, that F.A.M.F looks pretty upset about the whole doughnut situation."

Quentin- "Last week I heard of a situation just like this where another F.A.M.F was sighted stealing food from hobos."

Felipe- "They know no limits, Quentin......"
by Ms. Dixie Normus May 25, 2008
 
4.
Similar to bad ass mother fucker..but into fatass mother fucker.

Used several times as abbreviations online in instant messanging, myspace, and facebook.
oh em gee brookie! if you eat all of those cheese fries, you'll be a major FAMF.
by julia sunshine April 20, 2008
 
5.
A 'Fine-Ass-Motha-Fucka' Can also be FAME, or 'Fine-Ass-Motha-Effa. Someone who is extremely good-looking. You can't even comprehend how that person got to be so beautiful.
Damn. Carlisle Cullen (Twilight) is the hottest doctor/vampire ever. He's a famf.

Daaayyyyuuum, Megan Fox is lookin' real nice in that towel. She's a famf.
by RaRaRoxy1105 December 31, 2010
 
6.
Fresh Ass Mother Fucker

1.Most commonly used to describe someone who just got out a steamy shower session and then proceeds to freshen up.
Tommy is a FAMF
When he walks out the shower, all you see is steam.
by lilkitten August 08, 2011
 
7.
fagot ass motherfucker
He dresses like a fruiy and has attitude probs what a FAMF.
by tete339 May 14, 2009