fo

1. Gangsta shortening of "for"

2. The number following tree

3. Short for mofo, which in turn is short for motherfucker.

1. "Fo shizzle mah nizzle" is a phrase that has become WAY overused.

2. How come you paid tree fitty, I hada pay fo dollas.

3. He is a badass fo.

by someone18 September 11, 2006

FO

FUCK OFF

dude FO im sick of you..

by Samm1 November 8, 2009

fo

fucker
comes from cutting mofo in half

that fo just ran over my dog. fo.

by alphonso October 13, 2004

fo fitty fo

four hundred fifty four

Turn to page fo fitty fo.

by Bruce Citron September 14, 2003

fo

a misspelling of "for" when someone is typing a mile a minute, or in capitalised form, the hypothetical compound of oxygen fluoride

Hey! That oxygen flouride is fo the birds!

by eszett March 8, 2003

FOS

1. Full Of Shit

2. Female Oral Stimulation

3. Nickname for Andrew Lynn

1. Furby is FOS

2. Morris: I went for a bit of FOS with apiphonyiernfi

3. Are you going to millys FOS?

by jOeFiSh15 January 20, 2009

FOS

Fortress of Solitude

When the freak from down the street came over for dinner, I retreated to my FOS.

by Mai327 June 9, 2011