Frasier: I suppose the sooner I tell him, the better.
Niles: Oh, not necessarily.
Frasier: What do you mean?
Niles: Well, you know Dad. If you warn him Joanna's coming over, he'll just bolt to McGinty's. If I were you, I'd wait until five minutes before game time and then spring it on him. That way he has no choice but to stay.
Frasier: I think I owe him more than five minutes' warning. Besides, Dad would never deliberately hurt Joanna by standing her up. He is first and foremost a gentleman.
[Martin enters]
Martin: I saw Roz, so I hid outside in case that old gasbag of a mother was with her. [looking around] Well, I guess she wasn't, everybody's still awake.