Growing up, I believed (and would point this fact out to everyone - especially vegans) that cows utters would explode if they were not milked.
A childhood belief about general

others believed things like this
- I used to think that hot dogs were cow utters.— Viet
- I thought if you point the video camera at the TV then both the video camera and the TV will explode.
Anon - When I was younger I believed that if I were approching too much my TV it would explode.— Antho8=>
- I once believed that if you touched hamburger meat, it would explode!— Dipaloe
- When I was little, I believed that if I didn't go to the bathroom quick enough, I would actually explode.— Coco S.
- I always believed there were boy cows and girl cows and boy bulls and girl bulls— karen