Frasier: What the hell's happened?
Martin: Now, don't get upset. I was oiling my chair, trying to get rid of the squeak, and I had a little spill.
Frasier: A little spill? I just this carpet cleaned!
Martin: Well, I'm sorry. It was an accident.
Frasier: Sure, Dad. "It was an accident."
Niles: It was an accident. I saw him step on it.
Frasier: Niles, you know as well as I do, there are no accidents. Just admit it, Dad, your latent hostility toward me has been building through the years, little by little, until you've finally struck the Achilles Heel of my decor, the Berber carpet!