1 definition by Seattle (Big A)

gack

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 1, 2005