A gynecologist who had lost interest in his medical practice

[Bad Karma]

A gynecologist who had lost interest in his medical practice decided to change careers and enrolled in auto mechanic school.
He performed well in the course but was still shocked when he got an off-the-chart 200 on his final exam. He asked the instructor to explain the grade.
"I gave you 50 points for taking the engine apart correctly," the teacher said, "50 points for putting it back together correctly -- and an extra 100 points for doing it all through the muffler."