fo 

fo = fuck off

fo or im going to stick my massive donkey sized bell in ur fuckin ear
also fu = fuck you as in im a fu in the ear I WILL FUCK U IN THE EAR

fo by marc May 9, 2003

FO 

Airline First Officer (Co-Pilot).Works in concert with the Captain in performing the duties required to operate an airplane safely on the ground and in the air. Typically a younger (less senior), less experienced pilot, but nonetheless a competent professional. Flies the airplane from the right whereas the Captain sits in the left seat.

The FO flew the leg from LAX to JFK.

FO by apilot April 27, 2007

fo 

for

fo by Anonymous April 17, 2003

Fo 

In chicago "Fo" means Four Cornered Hustla. Which is a Chicago Gang.

"Iight Fo"
"Hey Fo"

Fo by Folabi May 22, 2005

Fo 

1. Anything you perceive to be bad or negative
2. An ugly or unattractive person- adj, noun
3. an insult used in joking around with a friend

1. That banana was rotten, it tasted fo
2. "Wow man, how could u date her she's so fo!"-as an adj.
"That fo should walk around with a bag over her
head!"- as a noun
3. "Come on Jackie come out with us, don't be fo like
Lisa!"

Fo by Justin Helfman July 22, 2008

fo 

Fo can mean the following
1. Slang for the number "four"

2. Slang for "for"

3. Slang for info, or information

1. Yo, gimme the fo discs

2. Fo Shizzle (For sure)

3. Gimme the fo on dat guy.

fo by AnnoyedBlackGuy August 11, 2006

fo 

the number between 3 and 5

I axed my moms for fo dollas

fo by Vegas March 24, 2003