- vbto have sex. A phrase originating in black usage: jook is said to derive from an Afri-can word for jab or poke, used since at least the 19th century in the USA as a euphemism for sex. Jam is a slang syno-nym in its own right.
Contemporary slang . 2014.
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jam — I. vb 1a. to play music informally, to improvise. The phrase originally referred to loose aggregations of jazz musicians, typically playing after hours , later to rock and blues. 1b. to make up an improvised rap chant. The word and the practice… … Contemporary slang