I convinced my sister that you could give someone cancer by pointing a TV remote control at them and holding a button down for about a day and a half. This in itself is comical enough, but she took it to the extreme conclusion that it gives you cancer if it's pointing in your general direction for any length of time, whether or not a button is being held down. To this day she still insists on having remote controls point away from her.
A childhood belief about tv

others believed things like this
- I used to believe that the remote control could control all the things in my house, including my dog.— Felipe
- I used to believe that your belly button was what held your top half to your bottom half...— Debelouwho
- I used to believe that a half moon was gods finger nail, and his finger was pointing downwards.— clo
- I used to believe that the "cruise control" button in cars meant that the car could drive/maneauver itself.— Myriam
- Mom told us that if we didn't eat every single bite of our veggies at dinner time, we'd get colon cancer.Anon
- I used to believe your belly button was a knot that held you together - my parents had wierd anatomical views— anne