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When a girl and guy who are (typically) friends have slept with the same girl or guy.
Kate and Javier are klondik cousins because they both slept with Gina.

Guy 1: "Luis was shocked when found out Liz was his klondik cousin!'"
Guy 2: "Why though? Tino gets around".
by WordPlayAllDay May 16, 2016
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Apr 28 Word of the Day
Literally everyone, ever. Including the writer of this definition.
by masokitsune January 17, 2019
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