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11.
GC
An old long forgotten chat board on www.Neopets.com. Filled with teenagers whom seemed to be on 24/7. Infested with n00bs and almost entirley spam, the place was deleted by the evil TNT a few years back, and now is the stuff of legend, with rumours spread by the old GCers.
Old GCER: "Hey does anyone remember on GC when everyone used too.."

n00b: "WOW * spreads to everyone*
by thecheescakeofdoom December 05, 2010
 
1.
GC
Good Cunt - Usually used between friends when someone objects to the full verbal form of the term "good cunt".
David; Want a beer?
Nick: Cheers bro, what a good cunt!
Claire: Dont use the C word!
Nick: Ok... GC!
by Keenaz May 19, 2010
 
2.
GC
An abbreviation for "good character(s)". It refers to a person or persons who is/are extremely interesting. Good characters do not always have to be your friend; as a matter of fact, they are often seen as complete jokes to you and your friends. GC's are usually invited to parties to enhance the quality of the pictures that will be taken and uploaded to facebook.
"Is Eric coming to the party this afternoon? He's such a GC"

"I went to the Berkshire Apartments and hung out with some GC's. I can't wait to show you the pics"

"Joe got his certification as a reverend over the internet. He drinks whiskey every day and believes he's fighting for the Confederacy in the Civil War. GC!"
by Cat Baker May 04, 2009
 
4.
GC
Good Cunt
Jay: Did you fuck Jess last night?

Bob: Yea! I gave that bitch ass to mouth.

Jay: GC.
by bigoldirtyslut December 27, 2010
 
5.
g.c. is used to give props to a bro who has made a good call.
Ryan: That girl only looks good from far away.
Kevin: g.c. man. g.c.
by Ryan B. Cook November 16, 2007
 
6.
GC
Gay Cunt
Man, that guy is such a GC
by mario chewbacca December 12, 2010
 
7.
gc
Abbreviation of Game Cube, a video game console
I just got the new Mario game for my GC!
by Invalid H. User April 23, 2003