look up any word, like sweetest day:
 
1.
fy
Short for fuck yeah.
"School is over forever!'
"FY, man!"
by the_grad June 07, 2005
 
2.
fy
Short for "f**k you"
- Oops! Did I break it??
- FY, man!!
by Sam Star November 28, 2004
 
3.
FY!
internet acronym for "Fuck Yeah!"

(people often mistaken the "!" as an inverted "i" expecting it to be FYI or "for your information")
Dana : Seen that movie?
Ray : FY!
Dana : IKR?
Ray: :-)
by Andrei "CodeCalibre" January 21, 2011
 
4.
fy
Fuck Yeah!
Person 1: I ran over a deer with my bike. FY!
by ♥k a t i e♥ September 11, 2011
 
5.
Fy!
Swedish word meaning the same as "Fie!" in obsolete English. Like saying, "Shame on you!"
A Swedish mother will reprimand her naughty child by shaking her index finger at the child saying "Fy, fy, fy!"
by viktor_sundqvist July 21, 2008
 
6.
fy
Used as a map prefix in Counter-Strike which means "fight yard." The most fun maps of them all.
n00b1: omg, letz play the map fy_poolday!
n00b2: omg thatmap is liek da uber leet pwnz0rz!!1111oneoneoneoneonelevenelevenelevenelevenonehundredandeleven
by KunzileUD July 01, 2005
 
7.
fy
Used as a prefix on maps in Counter-Strike that means "fight yard." The most fun maps of them all.
N00B: OMG LETS PLAY FY_POOLDAY~~~~~~~
NOOB2: OMG YES THAT MAP IS DA UBER LEET PWNZ0RZ!!11111oneoneone
by KunzileUD July 01, 2005