You just get done putting your stuff away when you turn to your girlfriend and say: "Hey, now that we got the everyrhing room. Let's just say we play a game for transform each other. Whoever wins, get to change into whatever they want for days if they get bored. And we can play whenever we want, same rules. How is that sound?"
"Hmm,... sounds good to me. What game do you have in mind?" your girlfriend questions.
"Well, let's play a game we both know so there is no cheating. How about we play rock, paper, sciccors?" you finish.
Then your girlfriend starts,"Okay then. We go on three. One. Two. Three..."