Quote from Frasier in Roz in the Doghouse
Frasier: Well, curtain's going up. Listen, Roz, if you need anything, feel free to call me absolutely anytime. Well, except for the next three hours, of course. I'm at the opera. Oh, no, no, no... four hours, it's Wagner. Um, oh, then I've got a late supper, then right to bed, I've got an early squash game. Tell you what, let's just say call me absolutely anytime after four tomorrow afternoon.