MMF

Meeting Muthah Fucka

Person always in meetings.

by Johnny Rotten February 17, 2004

MMF

A threesome that is male male female.

See also: MMM , FFM , and FFF

One(F): Yo Two, you down to MMF with Three?
Two(M): Only if Three is down for it.
Three(M): I'm in!
*then came the straight woman-who-is-with-Two-but-is-attracted-to-Three's dream threesome

by Gimmily January 17, 2023

MMF

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

MMF

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 9, 2006

mmf

mental mind fuck

When the information or circumstances are too extreme to be comprehended.

"He says he loves me, but he still wants to be with his wife. It's a real mmf."

by Heura February 18, 2012

MMFS

Makes Me Fucking Sick!

David: Did you see that stupid episode last night.
Eric: Yes, bloody hell that guy was crazy.
David: I know, MMFS!

by R233444 June 17, 2009

mmf

"mentality my friend". Mmf is used to describe people who don't know how to dress or purchase and wear an item of clothing that is just completely horrifying.

*Sees girl passing by with pink sparkly uggs* Girl 1: Did you see that? Girl 2: Mmf.. Girl 1: I know omfg.

by doyoueverjust December 15, 2013