Questions During an Exam

Should you have any questions during the exam, just raise your hand. This should cause enough blood to flow to your brain to answer it yourself.

Passing a School Bus

The following is supposedly a true story. To be included, besides being true, the story is most likely strange, weird, surprising, or funny.
"Unlawful to Pass School Bus from Either Direction" I guess that some people misunderstood that, because now it reads: "Unlawful to Pass Stopped School Bus from Either Direction".

Light Bulb - Students

Q: How many graduate students does it take to screw in a light bulb?
A: Two and a professor to take credit.