A: I was going to be a doctor.

B: What happened to your plans?

A: I got a D in college chemistry.

B: Well, a D is better than an F.

A: A tutor helped me get the D!

B: So, you didn't become a doctor.

A: And now I'm glad that I didn't.

B: Why's that?

A: A hospital is the most dangerous place in the world.

B: Oh, yes, because of all the killer germs.

A: If you?re a smart doctor, you stay away from hospitals.

B: Yes, the smart doctors are those TV news doctors—no hospitals, no patients.