A gynecologist was getting sick of his job and decided that he needed a career change. He'd always enjoyed tinkering with engines so thought he'd join the Navy and become a marine diesel mechanic.
So he went through Boot Camp and along to Engineman ‘A’ school and the final test was to strip the diesel 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 went to the Chief instructor and queried the mark.
The Chief 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 exhaust port."