MFF

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.

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MFF

An acronym of the furry convention "Midwest Fur Fest". It's the world's largest furry convention taking place in Rosemont, Illinois each December.

Hey, are you going to MFF this year?

Nah, I can't be assed. The wait for registration over there is so long it may as well be called line con.

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MFF

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!!!

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MFF

Acronym for Man Foot Fetish. Self-explanatory.

Matt has a severe case of MFF.

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MFF

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"

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MFF

Stands for Mr. or Mrs. Fartty Farterson

Yo dawg my homegirl farted on me, damn MFF.

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MFF

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!"

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