joke source: http://whitney05.hubpages.com/hub/college-jokes
A blonde student goes in to take her final exam, which she's been told consists mainly of true and false questions.
She takes her seat and stares at the paper for five minutes. Then a little light bulb went off in her head; she dug through her purse and toko out a coin. She starts tossing it on her desk and marking the answer sheet- true for heads and false for tails.
She finished the entire test in about thirty minutes, whereas the rest of the class is still working.
She starts tossing the coin, swearing to herself.
The exam's moderator, a little alarmed, and approaches her and asks what's wrong.
"Well, I finished the exam in thirty minutes, so now, I'm checking my answers."