The Gynecologist - Mechanic

I saw this on a nother forum and thought it was pretty funny.
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A gynecologist had become fed up with malpractice insurance and
Medicare paperwork, and was burned out. Hoping to try another career where
skillful hands would be beneficial, he decided to become a mechanic.
He went to the local technical college, signed up for evening classes,
attended diligently, and learned all he could.
When the time of the practical exam approached, the gynaecologist
prepared carefully for weeks, and completed the exam with tremendous
skill. When the results came back, he was surprised to find that he had
obtained a score of 150%.

Fearing an error, he called the Instructor, saying, ' I don't want
to appear ungrateful for such an outstanding result, but I wonder if
there is an error in my grade. '

The instructor said, ' During the exam, you took the engine
apart perfectly, which was worth 50% of the total mark. You put the
engine back together again perfectly, which is also worth 50% of the
mark. ' After a pause, the instructor added, 'I gave you an extra
50% because you did it all through the muffler '