I know, my dad used to make me use on for Jo, I put it on my hand and on the other side barked in a deep voice, and it went off..it REALLY does hurt, and thats my hand!! I'd never use it again, especially when it went off, and Jo cried, and it went off for her crying..I had to run and take it off her, so I 'forgot' to put it on, and dad gave up on telling me to put it on..I hate them, they shouldn't exist..