Martin: Where's Niles?
Frasier: He's out for a walk. Oh, I may as well tell you the whole thing. Maris is on board. She and Niles had a horrible fight, and their marriage is in worse shape than it's ever been before, and no need telling you how she got here in the first place!
Martin: I know, I know. What was I thinking, inviting her to come on the cruise?
Roz: You invited Maris?
Martin: Yeah. Well, Niles was so upset over being alone on his anniversary, it seemed like a good idea. Smart, huh? I give you all this guff about sticking your nose into other people's business, then I turn around and do the same damn thing.
Frasier: Oh, Dad, don't be too hard on yourself.
Roz: Frasier.
Frasier: Oh, all right. I invited Maris, too.
Martin: You did?
Frasier: Yeah.
Martin: I thought I told you to keep your big bazoo shut.
Frasier: Oh, you're one to talk!