1. A word meaning "fool", in the case of Mr. T

2. A commonly used programming variable, used when someone doesn't want to spend the time thinking up a real name for it.

3. A metasyntactic variable commonly used by coders.

Foo is often used in conjunction with the words bar baz and qux
1. "I pity the foo!"

2. foo = 3;

3. "Damn! Dont we have any good food? All thats left is this foo!"
"The code is full of foo"
by "Niffshack" February 20, 2005
Fool, edjit. To be a foo is to suck at life. To be inexpirenced. in other words a jackass
Yo foo, get of the road
by Herman Bunker June 02, 2006
dumbass
Your a foo!
by Shae June 27, 2003
Saying some one is a dumb person it is a slang meaning for fool
Sup foo
by Shib May 14, 2002
State of extreme ugliness.
Super ugly.
That boy was foo, far from cute!
by Catori November 18, 2010
When one farts and a small amount of poo also leaves the anus.
Oh my god kieran just did a foo! Now he has to clean up his undies!
by --Willy-- October 07, 2009
short for fool
shut up foo!!
by deathjork October 08, 2008
A term used when describing the need for either a very big fart or a very small pooh, but you're not sure.
Damn, I think I need a foo!
by Cassandra Nilsson October 12, 2007

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