gfym 

go fuck your mother

mustache was told to gfym after trying to get pug1 arrested on multiple occasions

gfym by smalldogs October 28, 2013

GFYM 

Go Fuck Your Mum. Simple. Basically if someone is really pissed off and some dick comes and ruins their day, just a phrase to tell them to go do one.

James: "Amy you look like a mong in that selfie you just uploaded on instagram. Ha gayyyyy."
Amy:"GFYM James."
James:"....."

GFYM by amxlia July 2, 2014

GFYM 

When a faggot says “GFYM”, he’s saying that he’s gonna fuck your man.

Nick: GFYM, Brandon
Brandon: I ain’t got a man for you to fuck
Nick: Just let me suck your dick
Brandon: No chance, faggot!
Nick: I’ll give you some baseball cards if you let me suck the fuck out of it.

GFYM by Lizardfrog January 19, 2025

GFYMF 

Could mean either "Good For You My Friend" or "Go Fuck Yourself Mother Fucker". Depends on which situation you are in to reach the desired results.

Christian: Did you see my hole in one!
Burt: GFYMF!
Christian: Good for you my friend?

GFYMF by BdubCav August 20, 2015