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.