When someone says or does something stupid you apply the MUFF. Can also be applied via a braced MUFF. Taking your index finger and middle finger putting them together and applying pressure behind the idiots ear(just along the hair line) and pulling/swiping towards yourself catching they're ear. And hopefully achieving a snap noise and a disgruntled look of confusion from the receiver of the MUFF.

Guy: I think Larry the Cable guy is fricken hilarious...
Friend of Guy: Holy shit dude. I think you got a MUFF comin...
Guy: What? He's really funny.

Friend of Guy: Applies his index and middle fingers behind Guy's ear and swipes that shit... Achieving a loud snap sound.

(Guy then realizes he was being an idiot and apologizes for saying Larry the Cable Guy is hilarious.)

Muff by Johnny Reds February 16, 2009

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Muff

1. A warm, furry place to warm up your appendages. 2. My girlfriend's cat.

"She has a might nice muff in her lap."

Muff by Anonymous December 5, 2002

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muff

A game played with a soccer ball in which the players use their feet, knees, chests, and heads to prevent the ball from touching the ground. The player who lets the ball fall is given a letter (beginning with "m", then "u", then "f", and finally a second "f"). When a player spells out the word "Muff", he/she then turns around and allows for a different player to kick the ball at their hiney.

Player 1: "lets play Muff!"
Player 2: "No! Last time I couldn't sit for a week!"

muff by Derok September 19, 2005

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Muff

An ungodly hairy cooch. A word to use instead of "douche bag" or "pussy" when insultind another individual.

STFU you muff! Fuck yourself in hell, you muff!

Muff by G-Shizzle December 28, 2005

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