Man 1: "Whats the most voltage a human body can take before you get killed?"
Man 2: "I heard that even a 12v battery can be deadly when licked; so I suppose not too much."
Man 1: "Great so hooking up a 9v to my nuttsack won't kill me."
Man 2: "Man 1 was a good man, but not a bright man. We will know of his charity work and not how he died with a 9v battery clipped to his nuttsack."