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It's heroin, but in a black, sticky, TAR like substance. It's more common and easier to get in Mexico, hence its name.
"I like Mexican Tar better than smack because it's cheaper."
by Samantha July 01, 2003
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2
The smell of cooking mexican tar evokes the same symptoms i expereince right before vomiting: hot, runny saliva, nausea, gagging. It is so grossly pungent & foul, but the addiction overpowers this truth & I continue.
by tabitha November 03, 2003
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