Bonus Points

The day before exams, four college roommates decided to stay up late drinking. Needless to say, they were late for class the next morning. But they thought they had a good alibi.

“We blew a tire on the way here,” said one of them.

“OK,” said the professor, “but you will have to take a different version of the exam than the other students.”

The first question, worth 95 points, read: “Which tire did you blow?”