Duck Tails

Three doctors are in a duck blind and a bird flies overhead. The general practitioner looks at it and says, "Looks like a duck, flies like a duck... it's probably a duck," and shoots at it but misses and the bird flies away.
The next bird flies overhead and the pathologist looks at it, then looks through the pages of a bird manual, and says, "Hmmmm...green wings, yellow bill, quacking sound...might be a duck." He raises his gun to shoot it, but the bird is long gone.
A third bird flies over. The surgeon raises his gun and shoots almost without looking, brings the bird down, and turns to the pathologist and says, "Go see if that was a duck."

Colonoscopy

Being nervous, and embarrassed about my up-coming colonoscopy, on a recommendation, I decided to have it done while visiting friends in San Francisco. Allegedly, there are many female Gastroenterologists and they are much more gentle. 
As I lay naked on my side on the table, a beautiful doctor began my procedure. She told me, "Now don't worry, at this stage of the procedure, it's quite normal to get an erection."
"I don't have an erection," I replied.
"I do." replied the doctor.
Note to self:  Never get another colonoscopy in San Francisco.

Letterman's Bad Surgeon General

Top Ten Signs You're A Bad Surgeon General
10. You've got a pack of Marlboros rolled up in your lab coat sleeve.
9. You never appear in public without a half-empty bottle of Bacardi rum.
8. Morning, noon and night, you can be found wandering around in a hospital gown.
7. Always confusing defibrillator with fry-o-lator.
6. You thought "Chicago Hope" was going to be a hit.
5. Your medical degree is from that correspondence school endorsed by Sally Struthers.
4. Instead of flu vaccine, you recommend so-called "flu-proof socks".
3. You smoke like a chimney and drink like a Kennedy.
2. You spend your entire day doing the very thing you said should be taught in school.
1. Your cure for heart disease: Zima.