Operating on a small watch battery, the Annoy-a-tron generates either a 2KHz, 12KHz, or alternating beep that repeats randomly between 2 and 8 minutes for a period of weeks . So what do you do with it? Well, you turn it on, and then hide it in your friend’s room/co-worker’s cubicle/significant other’s car, etc. It’s so small, that they’ll have trouble finding it; meanwhile, it slowly drives them insane . Yeah, some friend you are. Don’t be surprised if the eventual retribution involves a decapitated horse head. That’s all I’m saying.
[via Gizmos for Geeks ]