When I was little, my dad had a truck with two gas tanks. He used to tell us that the button to switch from one tank to the other was a blow up button. I believed him until I was 12.
A childhood belief about cars

others believed things like this
- I believed that if you pushed your belly button, your bum would fall off.— Wendy
- I used to think that the TV show "Shark Tank" involved actual sharks in a tank.Anon
- I wanted to grow up and be a truck. Not a truck driver, a truck. Anon
- i thought that outies were an on/off button— mr.bob
- babies come out of your belly button— Kit
- When you saw a funeral go by, you had to grab a button on your shirt.Anon