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FO

Photo Time.
For when my-space posers meet up, cover their faces in make up, and take 'arty' photos. preferably in black or white.
c: omgzzzaa! i totally feel like FO today!
m: yeh, i'm feeling nostalgic today. bring some teddy bears to cuddle in the shots.
c: great! i love FOing with you, i'll bring my makeup!
m: we're gonna look so hot!
by mcmcmc August 14, 2006
mugGet the FOmug.

fo fo niggas

Niggas that just don't give a shit and PWN anything that moves.
Fo Fo niggas they come upon your house, they ring upon your doorbell and knock your white ass out.
by Fo Fo Nooblars April 17, 2004
mugGet the fo fo niggasmug.

FOS

Fuck On Sight. An acronym used by two friends to describe a person who they see who they would like to instantly fornicate with on sight.
Two guys are walking when they see a really hot gurl and one gay says to another FOS? And the other gentleman nods in unison.
by Ilovecurry April 14, 2010
mugGet the FOSmug.

FOS

Word used to describe a person that quiet often doesnt tell the truth, or in other words is "full of shit"

Also known as a "Fossi"
Guy 1: "I once used a cat as a soccer ball"
Guy 2: "ahuh, you're FOS"
by J!M! June 27, 2008
mugGet the FOSmug.

FOS

this is a shorter term for "Flap Of Skin". a flap of skin is someone in your group of friends whom you may consider the "loser" or the person who you only hang around with for a certain reason, that reason not perticulary meaning you enjoy their company.

it could also mean someone with NO private parts.
" Kris has no vagina"

"She is but a Flap Of Skin!"

"I couldn't concentrate when the FOS was talking to me, she annoys me to much."
by i heart flap of skin July 12, 2009
mugGet the FOSmug.

FO

Nathan Fillion created the acronym FO, which is the short form for his phrase Full On. It can be used on its own, and/or to intensify a phrase, such as Double Rainbow.

It means that which is:

•fully ecstatically wondrous

•beyond joyfully amazing

•intensely orgasmically blissful
Here are some usage examples for FO, which is short for Full On. (For more examples, see the Twitter page belonging to NathanFillion:)

Nathan Fillion, on his Twitter page, kindly acknowledged my entry work defining his recommendation of the new "in" phrase: "Double Rainbow" on Urban Dictionary! He said it is "Full on." Thank you, Nathan. You are so Full On Double Rainbow! (FO DR!)

The TV shows Castle and Firefly are so intense, they are Full On Double Rainbow! (FO DR!)

Serenity, the feature film starring Nathan Fillion, is so vivid, it's Full On Double Rainbow! (FO DR!)

Nathan Fillion is so awesomely spectacular, sexyhotmessgorgeous, and brilliantly talented, his fame is sweeping across the nation, and over all the world! He is Nathan "Full On" Fillion!
by Kcat10 August 1, 2010
mugGet the FOmug.

FOS

An acronym that stands for: Full of Shit. pronounced "Faas"(long a sound), used do descirbe a statment from someone who is a habitual liar or bullshitter
Johnathan: Yeah i got my hot asian fiancee pregnant...
Everyone else: FOS FOS FOS!!!
by Apoo7 December 19, 2008
mugGet the FOSmug.

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