The Bakemonogatari commentaries are fucking fantastic
Senjougahara:But if Araragi comes over whenever your room gets messy, then it might be a good idea to really trash the room once. Why don't you line the whole floor with your underwear and get a kick out of his reaction?
Kanbaru:It's highly likely that he'd do the laundry without any reaction. I don't exactly line the floor with them, but Araragi-senpai deals with my underwear in a quiet manner.
Senjougahara:Hey, are you making my boyfriend wash your underwear?