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Like the word rasist, just that you're not against black or white people, but gay people.

So basicly it's another word for homophobe.
A: Your uncle is gay? Omg, that's sooo wrong.
B: Wrong? ...whatchu mean?
A: Just imagine him having sex with another guy, it's just wrong.
B: Omg, I don't think about that, you perv! You're a fucking gasist.
by MEfdkh35 December 26, 2010
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