ELI5: Explain Like I'm 5

TeleZapper

Have you ever gotten a phone call from someone trying to sell you something, but you didn't want to talk to them? Well, a telezapper is a little device that can help you with that!

You see, when companies call your phone, they use a machine that automatically dials your number and tries to sell you something. But the telezapper makes a little noise when it answers the phone, kind of like a beep. This noise tricks the machine into thinking that your phone number is not a working number anymore, so it won't call you again!

It's like having a special secret code that makes those annoying sales calls go away. So if you ever want to avoid talking to someone on the phone who's trying to sell you something, just use your trusty telezapper!