Whip-ty Nine occurs when both members of a relationship are equally whipped. Much like sixty nine, both parties receive equal amounts of benefits and disadvantages simultaneously.
Neither person has the upper hand in the relationship in a Whip-ty Nine scenario. However, make no mistake; there is some serious whipping going on.
Guy 1: Dude, Jenny made Kyle stay in with her tonight, AGAIN! When is he going to hang out with us?
Guy 2: Bro, Kyle isn't the only whipped one here; every time he stays in, he forces her to make him sandwiches. It's classic whip-ty nine!