Hetrobro homosex, is when two bros, both straight, or one gay and one straight, hook up as a one of, or on more than one occasion. Just two bros helping each other out for purely sexual reasons without it being gay.
Mike: Dude you slept with Ryan? Are you gay?
Billy: No man, it was just pure Hetrobro homosex, not gay, no biggy!
by Dominoefrogyoe July 3, 2016
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