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5.
foo
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
 
30.
foo
Short for fool, as per Mr. T.
"I pity the foo who..."
by slice32 April 18, 2005
 
31.
Foo
The word foo is mainly used by blacks and latinos.It is the black and latino way of saying dude.
aye foo where the weed at?
sup foo
by EdsonA. March 27, 2005
 
32.
Foo
someone who is foolish
derived from the word fool
god damn you are one foo
by Daniel Morley February 12, 2004
 
33.
Foo
Like Pig-Latin:
A language from who-knows-where that is actually a variation on English.
Also known as "Gibberish" and "Double Dutch".

It is spoken by putting the sound 'inag' between each syllable. If the word starts with a vowel, put 'inag' first, if starting with a consonant, after the first syllable.

After much practicing, it can be spoken VERY fast, sounding VERY cool. And other people can't understand you.

I know people from across the province who can speak it.
'Finagoo inagis inaga cinagool thinaging tinagoo spinageek'.
by ~Cera~ February 03, 2005
 
34.
foo
used often by mr T
I pity the foo
by Anonymous October 10, 2002
 
35.
Foo
An indiscriminate word in place of f***. Can also be used as a form of comic relief.
Person 1: Your brother ate your cookie.

Person 2: aw foo!
by Sazuki July 08, 2010