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A type of party when condoms are banned and 1 person has secretly is HIV+ or something similar. Usually attended by gay guys wanting the thrill of not knowing whether they are infected or not and having sex with other people.
Guy 1: "William got HIV."

William: "Yeah. It was from a sex roulette party."
by Some Guy Defines Things May 18, 2016
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2
A game played in which multiple men ejaculate inside of the same woman and the winner is the man whose sperm impregnated the woman
Jerry has two kids; he got both of them from playing sex roulette.
by Scruffy Doo January 21, 2011
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