Low grade marijuana. Usually from Mexico. The prefix Mexi derives from poor, dirty, and smelly. Brown sometimes black and lots and lots of seeds.
Sam: Dude, I'm selling michael a joint of mexiweed for 15$. I'm telling him it's chronic.
David: Haha what a dumbass.
David: Haha what a dumbass.
by Darkishpol December 7, 2010
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