short for "phooey"; term used when something goes unaccording to plan or when something unexpected happens.
"Foo! That wasn't supposed to happen!"
by kaili June 20, 2004

dude: man they are kicking the shit out of that foo
dude2: wtf is foo?
dude: your mom is foo, now shut up and listen
dude2: wtf is foo?
dude: your mom is foo, now shut up and listen
by foo fighter May 25, 2005

by -=\\MAD MIKE//=- May 2, 2005

eww alyssa food!
Jennifer food in the go kart.
Manna food in the go kart and alyssa thought it was the guys who worked at the track.
Jennifer food in the go kart.
Manna food in the go kart and alyssa thought it was the guys who worked at the track.
by Manna Banana March 8, 2008

A cry of exasperation. Generally triggered by something traumatizing to your personal psyche. See foomatic.
by hampuff June 30, 2005
