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An extremely potent type of marijuana, usually one of the harder types to get. It is often refered to as "white bud" due to his complection being so white. Has been known to get you sick if you smoke it without being an experienced smoker. This bud is also very expensive due to its potency.
Jason: I wasnt high at all at Chris's until you whipped out that crazy shit, what was that called?

Tom: jackhair bro...jackhair
by Young deezy March 06, 2008
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