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a hilarious idiot but one you think fondly of. non offensive term for a dumbass joker.
"i love you man, you're so gastic it's jokes."
by HEXLER September 10, 2008
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When it’s very cold outside and ur fart freezes inside your pants.
I think I just had a gastic fart!
by Jtown360 November 26, 2017
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