a goodie from the Darwin Awards here......

Quote
Electric Safety Lesson
2002 Personal Account
All personnel stationed on an aircraft carrier are given safety lectures and demonstrations. In 1990, a First Class Petty Officer assigned to the mess deck was briefing new junior personnel on electrical safety. He showed them how to fill out a warning tag on circuits undergoing maintenance, and informed them that they were forbidden to work on the circuit until a second person had double-checked the tag and circuit. In a prime demonstration of why the rules were in place, he proceeded to open and grab a circuit that he supposed was de-energized, killing himself in front of 20 thunderstruck students.