A threesome that involves a male and two females. Usually, the guy is inn the middle. One woman is banging the guy, while the other has her muff in the guy's face, getting it licked.
The pornographic text was labelled MFF.
by Giannico August 16, 2003
Get the MFF mug.
Mother Fucking Friday
Other forms: MFM - Mother Fucking Monday, MFT - Mother Fucking Thursday

Used to emphesize that it's a good friday, or something great is going to be happening.
WOOT! It's MFF!!! I'm getting a 1/2 pound of weed tonight!!!
by filllx November 4, 2007
Get the MFF mug.
MFF + Manditory Fat Freind.... You ever notice that in group of hot girls there is ne that if Fat... The reason is so the rest of the girls look better and it makes them stand out...
"Look at all the hot girls in that group." "Yeah but they have a MFF"
by Will March 14, 2005
Get the MFF mug.
Stands for Mr. or Mrs. Fartty Farterson
Yo dawg my homegirl farted on me, damn MFF.
by George Hoefer April 29, 2005
Get the MFF mug.
Motherfucking Fuckboy. A boy who plays every girl you know. A boy who hooks up with your friends.
"Hey did you hear that Brett played Lisa? What a MFF!"
by Hdixiebabe August 9, 2016
Get the MFF mug.
Mass Friending Frenzy - Mass friending of people you don't know on Facebook just because they went to school with someone you know, or worked at the same company - or have some really remote, obsolete connection to you. Taking six degrees of separation to a whole other level!
#mff Friend Request: John Wenevermetbefore "'I went to the same elementary school in the same decade you did!' ; Susie Cuddles: 'Hey, I like kitties too! Friend me!' ; George Sputnik 'I worked at McDonalds! Wanna be friends?'
by Coug90 January 7, 2014
Get the #mff mug.