J.D.: What you got there?
Janitor: New circular saw. Just bought it. Four horsepower, 3,500 rpms, titanium finger guard.
J.D.: Why would you need a saw in a hospital?
Janitor: Why would an old hen need a banjo?
J.D.: Why does an old hen need a banjo?
Janitor: Why would I buy a saw if I had no stuff to cut?
J.D.: You wouldn't. That'd be crazy.
Janitor: Exactly. [J.D. bites into a wrapper] You need some help with that?
J.D.: No, thank you, I'm fine.
Janitor: Dammit. [bites hangnail] No, that'd be crazy.