Joke

A gynecologist had had enough and decided to change careers. He'd always been interested in engines so he went to school to be a mechanic. The final exam consisted of dismantling and rebuilding an engine, for 100 points. When the final grades came out the former gynie got 150 points. Thoroughly puzzled, he went to the instructor to ask what happened.

"You got 50 points for taking the engine apart, and 50 points for putting it back together. We gave you an extra 50 points because no one's ever done it through the tailpipe before."