GNC
Giant Nigger Cock
Guy 1: WOW, that guy had a GNC!
Guy 2: Was he black?
Guy 3: Yeah!
Guy 4: What else is new?
by FakeSteez December 06, 2010
GNC
Acronym for "Gender Non-Conforming"
Usually applied to gender fluid and androgynous individuals.
Person A: Is Sam a girl or a guy?
Person B: Sam is GNC.
by harpooneagle November 14, 2011
GNC
Piece of crap store that sells overpriced "health" products to idiots who dont know that they can buy the same thing for half price on the internet. Usually caters to Meatheads, wannabe Meatheads, Jr. Meatheads, Old People and people chasing that illusive "theatricle cumshot".
Hey Jim, You might as well use that GNC Gold Card to wipe your ass!!
by Jaggerrules July 14, 2004

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