Doctor Doctor - Three Crabs

Patient: Doctor, Doctor I've had tummy ache since I ate three crabs yesterday.
Doctor: Did they smell bad when you took them out of their shells?
Patient: What do you mean "took them out of their shells"?

Hard Transplant

A new arrival, about to enter hospital, saw two white coated doctors searching through the flower beds. "Excuse me," he said, "have you lost something?"
"No," replied one of the doctors. "We're doing a heart transplant for an income-tax inspector, and want to find a suitable stone."

You Can Do Better

A man went to the doctor for a check up. "How do you feel?" asked the doctor. "Fine." he replied. After a few more general health questions the doctor asked, "How many times do you have sex per month?" "About two or three," the man replied. "You should be doing better than that," the doctor offered. "Take these pills and come back in a month."
The man did and a month later he was again asked by the doctor, "How many times did you have sex last month?" "About two or three times," the man answered again. "I can't understand it," the doctor continued, "you should be doing much better than that." "I don't know," replied the man, "that's not bad for having no car and a small parish."