Dentist Appointment

Two guys are susposed to meet at 4:30. Charley shows up at 4:30 and waits. Finally, at almost 5:00, Paul shows up and Charley says:

- Where have you been? You're a 1/2 hour late.

Paul replies:

- Sorry, I had to go to the dentist. My dick's been hurting bad.

Charley says:

- If your dick's been hurting, why did you go to the dentist?

Paul answers:

- Because I had a tooth stuck in it.