Doctors to Change a Lightbulb

Q: How many doctors does it take to change a light bulb?
A: Twenty: one primary care physician to change it and 19 specialists to take it apart and look at it under a microscope.

Library Doctor

A blonde goes into a library and says, "Hello. I'm here to see the doctor." The librarian replies, "This is a library." So the blonde lowers her voice and says, "Oh sorry!" Then whispers, "I'm here to see the doctor."

Perscription

The doctor told me that a six inch pill would cure all my ailments.
I found that hard to swallow.