2 definitions by Johnny Reds

Pronounced as one word (Fit-Poss)
Fat Piece Of Shit. Can also be used in conjunction with WTPOS.
Look at that dude mowin' down them chili cheese fries! What a FTPOS.
by Johnny Reds February 16, 2009
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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.)
by Johnny Reds February 16, 2009
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