A little levity ;-)
A man who had just undergone a very complicated operation kept complaining
about a bump on his head and a terrible headache. Since his operation had
been an intestinal one, there was no earthly reason why he should be
complaining of a headache. Finally his nurse, fearing that the man might be
suffering from some post-operative shock, spoke to the doctor about it. The
doctor assured the nurse, "Don't worry about a thing. He really does have a
bump on his head. About halfway through the operation we ran out of
anesthetic."