look up any word:
40. 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!
1. FO
fuck off
JP: FO!
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
2. 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.
3. fo
fo is 4oz of prometh\codiene mix with some sprite and ajolly rancher and yall be leanin thas purple drank baby
i just poured up myself a fo bout to get folded
4. Fo
When one friend is acting like a fool.
"What u want Fo"?

"This fo keep bugging me"
5. FO
FO means fanny odor

F anny

+
O dor
=
FO

:)
. ew that girls got some bad BO
. no dude she has FO (fanny odor)
XD

Peace :)
6. 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!
7. fo
"fo shizzle ma nizzle" is a bastardization of "fo' sheezy mah neezy" which is a bastardization of "for sure mah nigga" which is a bastdardization of "I concur with you whole heartedly my African american brother".
Fo shizzle mah nizzle, Thomas.
rss and gcal