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
by Justin Helfman March 15, 2006
Top Definition
Full Of Shit: no data, no proof, a baseless opinion.
He's F.O.S. He doesn't know what he's talking about.
by gmerritt November 07, 2005
meaning for
fo' shizzle (for sure)
by keshan January 27, 2003
People who possess abnormally long toes resembling fingers.

These people are often shunned from gatherings that call for the exposure of their abnormal appendages such as swim meets, pedicure sessions and exclusive feet club.
"Oh my god, did you see that girl Emily with the foes? Ew "
by Rekily August 18, 2013
A short version of "Fuck off"

If you're lazy and don't feel like saying the full sentence, a simple "F.O." will suffice.
hey Jason.... "F.O."
by Chippity Chops November 13, 2004
(1) meaning "for"

(2) meaning "fool" in some dialects (see stupid ass)
(1)What was that fo'?

(2)Fo' if i catch you in my part of town i will cap your ass.
by Ty Chapman May 04, 2005
fuck off
Me: Did you just tell him to FO?
JP: No I said "oh"
Me: I totally heard "FO" as in "fuck off", sorta like "FU" for "fuck you"
JP: Hahaha
Me: Yeah I couldn't believe you said that at work
Me: This belongs on Urban Dictionary
by randomness323423 January 29, 2011
Short for "before"
Shut the fuck up 'fo I beat yo ass!
by Sir_Tweaks January 15, 2015

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