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1 definition by Seattle (Big A)

Very good marijuana bud. A superior strain of cannibus that has been found on display at the cannibus cup at least twice.
I got the GACK y0. y0y0 I'll give you 5 oz. of this gack I just got from vantown for a grand and a blowjob from your gf.
by Seattle (Big A) May 01, 2005