GOOD: Studying for a marine biology test.

BAD:Forgetting everything you studied.

REALLY GOOD: Having your marine biology teacher ask you to run the tests through the scantron grading machine.

REALLY REALLY GOOD: Seeing a pencil on the counter and switching your answers so you pass.

REALLY BAD: Realizing you just erased the answers on the key and changed them to your wrong answers instead of making your own answers right.

GOOD: Erasing the answers on test key and then actually switching some your wrong answers to right ones.

REALLY REALLY BAD: Having your teacher realize that your test and the key have the same eraser marks and busting you for cheating.

JUST PLAIN EMBARRASSING: Not changing enough answers to pass and failing by 2%.