Short for Game Killer. A similar, more masculine form of co*k-block, a GK waits until things are going well and proceeds to irreversibly destroy a friend's ability to get ass. This is usually achieved by trying so hard that it makes everyone uncomfortable.
I was making serious headway with a Bulgarian (I think) skinny blonde with a ginormous rack when GK suddenly appears in my peripheral. After thirty seconds awkward conversation and bad jokes, the blonde leaves.
by ssirjg238 April 19, 2005
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Gk is the meaning of Ginger Kid. In this case we call GK only to those ginger kids that surf the net and like to troll.
Hey, be careful with that GK, avoid him if you can.
by TheFiera November 6, 2011
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a gay kunt (cunt)
somebody that is gay but still manage to be a cunt about it
numeroues in amounts all over the world but especially common in places like VICTORA, AUSTRALIA
Mr keith keller of golden grove high and various other teacehrs, walkom, mcgee and so on are all GK's
by Hell Beers August 11, 2009
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Short term for Ghetto Krink. Homemade ink/paint mostly used for graffiti writers. Used in Kiwi Mops, Bingo Dabbers, Window Writers etc. To make, its 2/3 rustoleum oil based paint, 1/3 paint thinner. More thinner more drips.
Yo i just tagged that electrical box with m mop ad some GK. Its mad drippy and opaque!
by graffguy1 September 30, 2007
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"What's Gk stand for?"
"Oh, my real name is Gabrion but people call me Gk."
"So Ghetto King..."
"Yeah"
by htt127 December 7, 2011
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Urdu:Ganda Kaam, English translation: Bad Deed
oh shit !! yahan per tou GK ho raha hai.
by ohsama April 12, 2011
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GK = Gay Kunt!

a.) A person that is untrustworthy.
b.) Unable to speak truth, as they believe their own lies completely.
c.) A person without morals, and knowledge of respect.
d.) Scum of the earth.
e.) Piss weak
f.) A dreamer
g.) Betrayer of all
h.) Internet tough guy
i.) homosexual man
1.) Youre such a gk fag!
2.) I'd rip the shit outta you gk!
3.) Ggay pussies (referring to more than one)
4.) Im feel like gks eaten my sit

"other branches off the 'expression' are"
G-Gay, fancy pants, sissy boy, cum drinker, weakling, two face, Hershey slurper, no skill, Gatekeeper, Inspiredhost, retardo,
by shepardsbush August 31, 2008
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