You and Kerolay like to role play sometimes and one of your favorite games is called "Bad Lieutenant."
In this particular version of the game you're working undercover and your unit has been cracking down on brothels around the city. You pretend to be a customer looking for a full body massage and when to the girl asks you if you "want something extra?"
You inquire as to what does she mean?
You end up bartering over the price for sex.
In this version of the game you allow Kerolay to give you a full body massage with baby oil and then she propositions you. You take out your badge and tell her that she's under arrest unless she does what you want.