[bonchibuji]

Reminds me of the old joke.

Four students, all roommates, thought about skipping an exam since they haven't prepared well. They arrived really late for the exam, and gave the excuse that they had a flat tire on the way. The Professor agrees for a re-exam.

After a week, they come really well prepared. But, the question paper was a shocker.

"Which tire got punctured?"

[hmsimha]

I've changed a flat and then completely failed to remember a week later whether it was on the left or right side, so I guess I would have been in some trouble.