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2.
short for mother FUCKER... Often used when someone is extremely angry but is restrained by the surrounding envirnment.
AHHHHHH, MOTHER FUUUU- F! That is bull shit!
by FCUK July 25, 2003
 
1.
When you're about to say Motherfucker, but you stop from a number of reasons, which include, but are not limited to:
- Politeness
- Shock
- Awe
- Passing out
- Death
"Motherf.."
by Soiled Undergarment August 17, 2003