"toilet," 1932, probably from jack, jakes, used for "toilet" since 16c. (see jack). Meaning "prostitute's customer" is from 1911, probably from the common, and thus anonymous, name by which they identified themselves.
n. a toilet; a bathroom. : Is there another john around here?
n. a man. : This john came up and asked if I had seen the girl in a picture he had.
n. a prostitute's customer. : She led the john into an alley where Lefty robbed him.
n. a victim of a crime or deception; a sucker. : The john went straight to the cops and told the whole thing.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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