Quote from Diane in Diane's Allergy
Diane: Well, she's very sweet, obviously, but I'm a cat person. I obviously have some kind of an allergy to dogs. Sam: Are you sure it's the dog? Diane: Well, what else could it be? Sam: You've been around that dog before. I mean, you must have. You know, moving in with Frasier is a big commitment. I just wonder if this whole so-called allergy thing might not be psychosomatic. Diane: Oh, Sam, I'm very impressed. That's a complex psychological concept coming from a man who has to write L and R on the bottom of his shoes.