We live in dangerous times. Well, not really. Actually, life in the 21st century is safer than ever before. This, however, doesn't stop people from selling and buying overpriced and often useless self-defense products.
While most of the stuff on the market will simply gather dust on your shelf/purse/man-bag that's not actually a purse, some of these real products seem a hell of a lot more dangerous to the owner than the mugger.
Say you're yapping away on your cell at the mall, when that burly guy with a surfboard asks you to please kindly shut the fuck up. Little does he know, your "phone" is actually a 950,000 volt pacifier, your ex-wife is his current girlfriend, and "you" are actually a schizophrenic and a danger to society.
Granted, only a lunatic would own this thing. But you can see immediately the problem even a well-meaning person is going to have with "The Pretender" cell phone stun gun. She's driving at night, her real cell phone rings, she digs around in her purse and pulls out her "phone."
Of course, multiple fail-safes are in place to ensure you do not accidentally shock yourself in the head. 1) The device has to be on and 2) You have to push the button. Yes, that's it. Good luck not zapping yourself retarded.