fu 

1. The equivalent of the word fuck when you're attempting to keep your mouth clean around parents, young children, etc.

2. The fu in kung fu. 'Cause we're fucking cool like that.

3. The equivalent of the word fun, when you're still attempting to have a literate conversation while suffering from hapyp (good luck with that, kids. Trust me, I've tried).

1. Oh, hello mom. -stubs toe- AHHHH FUUUUUUUuuuuuu....

2. Oh yah, man. We're gonna do some Kung Fu 'cause we're so cool.

3. Yeah, we're gonna have some fu today.

fu by Sonny Pestilence September 15, 2008

fu 

Pronounced (foo) An exclaimation of disgust when someone screws up or messes up. Also used to berate individuals with no P&D.

Its antonym is Jix.

How in the hell did he manage to screw that up. Fuuuu

you are such a fu.

fu by fred_berg December 12, 2009

fu 

An acronym for "Force Units", a generic unit of measurement in chemistry.

The equation resolved to 15 FUs

fu by Resorath April 8, 2004

FU 

Short for Fecal Urgency. Severe diarrhea that comes on so fast that a bathroom must be found within a matter of minutes because it's coming out no matter what. Often contains little or no solid matter and feels like you're peeing out your ass. Frequently occurs the day after a long night of drinking

Those Jager shots I did last night caught up with me around noon and I had to stop at a gas station for a major F.U. attack.

FU by Urban_Wordsmith February 26, 2005

fu 

short for fuck you!

Jeff:OMG I Fucked Ur Mom!
Matt:fu

fu by Seagulls Of Santa October 6, 2008

fu 

furman university

im goin to furman university in south carolina

fu by cole December 21, 2003

FU 

For people who are too lazy to type out the entire phrase, "Fuck You".

Often used in computer speak.

"fu imma kya!"


FU can be referred to as, "Intarwebs Engrish".

FU by RawrNinjaRawr March 16, 2009