Career Change

A gynecologist was getting sick of his job and decided that he needed a career change. He’d always enjoyed tinkering with engines so he thought he’d become a mechanic. So he went along to mechanics school and the final test was to strip the engine completely and reassemble it obviously back into perfect working order. So our gynecologist friend did the test and anxiously awaited the result.
The day he received the results he got quite a surprise, he got 150%! He quickly phoned the instructor and queried the mark.
The instructor said “No, no, that’s right. First I gave you 50% for stripping down the engine, a very thorough job. Next I gave you 50% for reassembling it. A fantastic job, really! Then I gave you a 50% bonus for doing it all through the muffler.”