FY 

This textual acronym can either mean "fuck you/yourself" or "fuck yeah."

Example 1 (fuck you): FY YOU STUPID ASSHOLE.
Example 2 (fuck yeah): FY! SCHOOL IS FINALLY OVER!

FY by fhk x3 December 31, 2016

fy 

Short for fuck yeah.

"School is over forever!'
"FY, man!"

fy by the_grad June 16, 2005

FY 

"FY" is the abbreviation word for "For you ;)". It is used to show an unconditional and sincere appreciation for what someone just said to you by returning the same compliment. It always follows the word "Thank you for you".
Fun fact: "FY" is used a lot in Azerbaijan.

Pascal received presents from both of his friends during Christmas
Pascal: Oh wow, Christmas presents, thank you for you!
Julien: No, no, no, no, NO. Thank YOU for YOU.
Will: FY.

FY by Kazgrum December 20, 2016

FY 

Short for fuck you

Youre shit
FY man

FY by Spencer!!!!!!!!!!!!!! April 16, 2017

fy 

Short for "f**k you"

- Oops! Did I break it??
- FY, man!!

fy by Sam Star November 28, 2004

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

fy by KunzileUD July 14, 2005

fy 

Fuck Yeah!

Person 1: I ran over a deer with my bike. FY!

fy by ♥k a t i e♥ September 16, 2011