When I was in daycare, one of the forms of entertainment consisted of a toy catalog and a small adding machine (like a typewriter but with only numbers). We would look through the catalog, finding things we wanted, and put the number into the machine.
I believed the numbers it printed on the paper actually represented the things in the catalog, so I typed in the number for some "scary" plastic bugs hundreds of times. Then I would use the strips of paper to scare girls.
Weird thing is - it worked.
A childhood belief about toys

others believed things like this
- I used to believe that numbers had gender, that the odd numbers were boys and even numbers were girls. — Evelyn
- I used to believe that after the number "ten" came the numbers "tendy-one, tendy-two..." etc.Anon
- when i was little i believed that your social security number was the number you were born on the earth — christine
- i used to believe that our ansering machine was the washing machine and that it could talk
— tamara - When I got my feet measured by the electronic machine, I thought that the machine will squash my feet!— Helen
- I could NOT understand why, if a pen worked on paper, it couldn't also write in thin air.— Can you guess what it is yet?