8
"that dude is a mmf!!"
by SKurp March 22, 2013
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9
mmf, is the leet, or 1337 term for the sound of a muffled climax produced by one (male) wanking.
Omg dude, did you see that chick at the show? She was teh sexiest, I was like mmf...mmf..mmf all afternoon.
by Jeff July 27, 2004
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10
Meeting Muthah Fucka
by Johnny Rotten February 17, 2004
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11
a shorten version of the word "MO", which is a shortened version of the phrase "MO-FO", which is also shortened for the term Mother Fucker.
Basically it's a quick and easy way to call someone a mother fucker without having to use all those syllables.
"You are such an MMF!"

Jason: Hey guys! wow you look like crap today, well i gotta run BYE!
Todd: What is that guy's problem?
Gilroy: I don't know dude, i guess he is just an mmf
by Kayla Grace... January 14, 2008
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12
MultiMedia Fusion - a very powerful game and application creation tool. This is a very common word between "clickers", together with TGF and KnP.
MMF caused crash in EdRt.exe
by Imp June 22, 2004
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13
Main Mother Fucker
This could be used to describe a boss, or other leader-like figure in a workplace or otherwise.
"that guy's the MMF around here, you dont wanna screw with him"
by muka shaka paka July 08, 2006
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14
Magical Motherfucker. A man who is a master in sexually pleasuring a woman
I hooked up with a MMF last night and he had to peel me off the ceiling his oral game was so strong
by dreamyk September 04, 2016
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