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A small portion of cocaine. Usually offered on a key or a pen cap lid that has a long lip, or any other instrument that can hold aforementioned portion of cocaine. Can also be used in reference to methampthetamine, though more often with cocaine. Also referred to, when using a key as a key-bump. Most often, a bump is something requested and passed between friends at bars or cantinas, and then done in a restroom stall after the go-ahead is ok'd.
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