1 definition by Shiznito Bim Bam Snip Snap Nat

Top Definition
Acronym for "good ass shit"; very good
Trust me baby, I wouldn't send it to you if it weren't some g.a.s. gas.
by Shiznito Bim Bam Snip Snap Nat March 24, 2006

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Buy a g.a.s. [gas] mug!