A saying that refers to someone agreeing to do something gay as long as they are making money out of it. This includes kissing, but can extend to other more interesting activities.
"20 bucks if you kiss Steve"
"Sure"
"Wait, what? You're serious?"
"I'm not gay, but $20 is $20"
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