Martin: You know, Frasier, there's such a thing as being too sensitive about this stuff. Now, if it was Roz blabbing on instead of this Mary, you'd tell her to put a sock in it, right?
Frasier: Well, I suppose so, but, you know, this is different, Dad. She's just starting out, I didn't want to squelch her enthusiasm.
Martin: Because she's black.
Frasier: Dad, please, will you just stop saying that? Anyway, I will just have to deal with it for a week until Roz gets back.
Martin: Black.
Frasier: Stop it!