A woman gynecologist decides she wants to become a mechanic. She enrolls in a technical college and becomes an A student.

Before she can graduate she must pass the final exam, which is dismantling a car engine & rebuilding correctly. When she receives the results of her exam she sees the instructor gave her 150 points. Fearing there must be some error she goes to ask her instructor.

“If 100 is a perfect score, how is it I scored 50 points over?”

The instructor explains, “Well you scored 50 points for taking the engine apart correctly.”

“And 50 points for putting it all back together correctly.”

“You got the extra 50 points for doing all of it through the muffler!”