When two guys are orally Eiffel towering two chicks interconnected with a double ended dildo, the guys grab each others forearms and rock back and forth like old-timey lumberjacks hand sawing a log.
Hey! Remember how those girls gagged when we gave them the Ol’ Appalachian Whirlygig?
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi