Here's another rich one from the Land of the World's Stupidest Criminals:

Local paper tells of a 15-year-old girl arrested after she was found trying to get an altered prescription filled at a supermarket pharmacy. Pharmacist became suspicious because the prescription looked as it it had been "traced over." Turns out the girl had had dental surgery. Dentist gave her a prescription for 16 Percocets. She added a zero at the end. Sure--everyone gets 160 Percocets for dental surgery!