Frasier: Bup, bup, bup! Not another word!
Roz: But he-
Frasier: Bup! I don't care who did what to whom or in what disgusting manner. As we speak, hordes of viral Visigoths are hurling themselves over the battlements of my immune system, laying waste to my... Oh, dear God, you see how weak I am? I can't even finish a simple Visigoth metaphor.

Daphne: You've got a lot of nerve talking to me that way.
Sherry: Me? You're the one who started it. Didn't she, Marty?
Martin: Hey, you're not putting me in the middle of this.
Daphne: I didn't start anything. You've had your big conk in my business all day.
Sherry: That better mean nose!
Daphne: And what if it doesn't?

Sherry: Coffee's on. Want a cuppa?
Frasier: No thank you, caffeine only weakens the immune system. I'm fighting off a flu.
Sherry: Oh, I'm sorry. Let me get you some breakfast.
Frasier: No, no, That's really not necessary.
Sherry: Oh, no, no. You'll feel much better once you've had my scrambled-egg tacos and Spam patties.
Frasier: In keeping with the trusty adage, "starve a cold, disgust a fever."