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A mixture of various hard alcohols mixed together, usually made by teenagers whos parents keep alot of half empty bottles around.

Usually sits in a car trunk or closet until the teenager is ready to get belligerent.
Trevor: "Dude I just made some mystery chum last night!"

Tony: "Sick! What's in it?"

Trevor: "Peach Schnapps, Gin and Tequilla!"

Tony: "Your one dirty fucker!"
by mysterchummaker September 06, 2009
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