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Could mean either "Go fuck yourself" or "Good for you". Either one works quite effectivly.
person1: "Yeah, I won the prize!11!!!1"
person2:"GFY"
person1:"wha?"
by Blarg June 22, 2004
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gfy's - go fuck yourselves

plural form of gfys.

go fuck yourselves
hey Mr. cunt Southwood (some old wrinkly homo from spaghetti westerns)

you, your friends, your political party, and all your multiple personalities can go find yourselves squarely atop your own wrinkly impotent acorns. gfy's
by WordRepoMan January 21, 2013
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Can mean either "go fuck yourself" or "good for you", both usually in an offensive manner.
First Meaning:
Person 1: "Hey!"
Person 2: "What do you want?"
Person 1: "GFY!"

Meaning 2:
Person 1: I got an A on my test, everyone!
Person 2: GFY *rolls eyes*
by Flyingel May 07, 2015
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mixed meaning, in the case of a friend, good for you. If someone you don't like, Go F*** Yourself
Friend: Congrats on the promotion, G.F.Y.
Jerk: Leave me alone, G.F.Y.
by Flicky23 November 27, 2005
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