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Slang word for marijuana derived from Bob Marley (like its his) and Barley. Which is a plant that when dried and crumbled looks similar to shake.
Guy 1: Dude i just bought a sack of MB!!!!

Guy 2: Hella dog I love Marley Barley! Let's toke!
by coolguy1212 September 19, 2010
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Apr 21 Word of the Day
I've been jabbed
by Francesco II March 20, 2021
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