After making love, the man excused himself and went into the bathroom.

When he returned, the woman sat up in bed and remarked, "I can tell you are a doctor by the way you washed your hands before and after. " "Well, that's right, " the fellow said with a self-satisfied grin. "Do you know what kind?" The woman replied, " I would say an anesthesiologist. " "How did you know?", asked the M.D. She responded , " Because throughout the entire procedure, I did not feel a thing. "