Frasier: So, Sam, listen. Fill me in. I'm hungry for news of little Pavlov.
Sam: Pavlov? Oh, you must mean little Diane.
Frasier: I beg your pardon?
Sam: Yeah, I renamed the puppy Diane. I figured you wouldn't mind. I mean, it's my puppy now. Yeah, well, I tell you, it's so wonderful. I come home, she gives me any trouble, I swat her on the rear end and say, "Shut up, Diane." And she does. It's heaven.
Frasier: Sam, I have to be honest with you, changing the dog's name hurts me a little. Don't you think two Dianes will be confusing?
Sam: Well, maybe you're right. Well, we'll just have to call your girlfriend Pavlov.