if it's a hair test u might have well bend over and take it in the ass. if it's a piss they sell a drink that does work. it's 60 bucks but worth it. that is if u dont have much time. if u have time the what az said....lots of water. exercise helps get the thc out as well.
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Is marijuana addictive? Yes, in the sense that most of the really pleasant things in life are worth endlessly repeating.