Quote from Tim in Arrivederci, Binford
Al: When was the last time you spoke with him? Tim: Yesterday. Al: You did? How'd he sound? Tim: Alive! Al: Did he say anything about my being curt to him? Tim: Did he say...? As a matter of fact, that's... that's all we talked about. I'm convinced that that's what killed him, Al. [Al looks upset] Al, it was a joke.