Your grandma that doesn't tell your parents that you smoke and is also your dealer
Jim: hey I'm outa weed
Tom: let me call my weed grandma
by Weed grandma July 21, 2017
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A new age lingo term for weed that looks in any way brown and old.
Mike: Hey do you have any bud?
Ben: I haven't bought some in a long time, all I got is this grandma weed.
by Professor S1gmus November 16, 2016
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