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."
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