A man and a woman meet at a bar. after talking a bit they both find out that the other is a Doctor. After several drinks, they agree to have sex, no long term commitment just a romp in the "hay"
They go to a hotel where the woman goes into the bathroom and spends 15 minutes washing and scrubbing herself. She finally comes out of the bathroom and they proceed to have sex.
Afterward they are talking in bed and the guy says that she must be a surgeon, "why yes I am she says, how'd you know that as I never told you?" Well, the guy answered, you spent so long in the bathroom scrubbing yourself that I knew only a surgeon would do that. Oh, exclaimed the woman, and you MUST be a anathesiologist then. "Why yes I am, but how in the world did you know that?" he amswered. "Because I didn't feel a thing" she replied.