Cheeky. "And where, pray tell, are your official papers saying the house is yours?" If she must play this game with him then he'll taunt back just as easily. In doing so he just takes a seat on her couch, lounges about her living room, and kicks his feet up on her table.

"And while you're finding them make use of yourself and pour a real drink." He prefers wine, but won't tell her. He'd rather have the pleasure of scolding her when she comes back with mediocre alcohol. He only drinks the best because he deserves the best. If she can't produce the same papers she desires him to provide well. The house if free game, isn't it? Guess who's going to lose.