Foo 

A thing encountered by a specific fighter. The Foo Fighter, that, if not fought, would bring an end to the world as we know it

“I’m so glad the Foo Fighters took out that Foo down the street”

Foo by Jeoffery The Botched February 20, 2020

Foo Fighters 

The last true rock band. Seriously, they making great music. Fronted by ex-Nirvana drummer Dave Grohl

- Dave Grohl is such an awesome musician, the Foo Fighters rocks!

Foo Fighters by Rocker21 July 5, 2010

foo 

One of the default variables in programmer's slang. See bar.

And I incremented foo, but then forgot to check the array boundary and all hell broke loose

foo by Anonymous October 15, 2002

cracka foo 

A punk-ass Caucasian person,often a male,who is a fool.

Smereka acts like a cracka foo when he's drunk.

cracka foo by Morman January 4, 2006

foo fops 

n. 1) To administer a severe beating. 2)Your fists. 3)To knock someone out. 4)Prison slang for an ass-whipping.

"Homeboy was talking sideways, so I had to put the foo fops on his ass."

foo fops by Matt360 December 14, 2007

Foo Bunny

A dark assassin that hops all over hell killing people like the love child of the Energizer Bunny & a Mexican Jumping bean on crack. Known for it's ability to burrow in dark places & pounce it's foes with machine gun spray while hopping around like a meth baby on a pogostick.
The kung fu art of rabbit hopping while attacking your foe

I was DFA'd from a Foo Bunny while play COD4.

Foo Bunny by Obnoxious1 April 26, 2008

Kei Foo 

Only the funniest person in the world.

So, I was talking to Kei Foo and I honestly couldn't stop laughing.

We definetely need more Kei Foo's in the world.

Kei Foo by amy melg April 4, 2009