Medical Light Bulb Replacements

1.    How many doctors does it take to screw in a light bulb?
     a.    That depends on whether it has health insurance.
     b.    Three. One to find a bulb specialist, one to find a bulb
        installation specialist, and one to bill it all to
        Medicare.

2.    How many pre-meds does it take to screw in a light bulb?
     a.    Three. One to hold the light bulb, and two to pull out
        the chair from under him!
     b.    None: Premeds don't screw, they study.