The Blonde Test Taker

The blonde reports for her university class final exam, which consists of "true/false" questions. She takes her seat in the examination hall, stares at the exam paper for a few minutes, and in an apparent act of desesperation, reaches into her purse and pulls out a coin and begins tossing the coin and marking off the answer sheet.

Within 15 minutes she's done with all 200 questions, while the rest of the class is still feverishly marking and erasing and chewing on their pencils. However, she keeps her seat and continues tossing the coin.

The test moderator, worried that she might end up distracting the rest of the students notices her. The blonde however, is still flipping the coin, but now is busily erasing her answers and re-marking the answer sheet. As the test hour begins to wrap up, the blonde is seen desperately tossing the coin, swearing and wiping the sweat from her brow.

The moderator, now alarmed, approaches her and asks her if she's ok, and will she be able to finish the test.

To which she replies: "I finished the test in the first fifteen minutes. Now I'm having a heck of a time rechecking my answers!"