Frasier: Nice cardigan.
Martin: Daphne surprised me with it.
Frasier: You don't seem very happy about it.
Martin: No, well, I'm not. I mean, you just don't give somebody something for no reason, that's my rule.
Frasier: Dad. Spontaneous gift-giving is one of life's great pleasures. Didn't you ever give Mom anything without a warning?
Martin: Yeah, you! Where do you think I got the rule from?