I used to believe that if I jumped from a height and I had my legs crossed I wouldn't break my legs and I would land unharmed.
A childhood belief about physics

others believed things like this
- when i was little i always asked my mom if my aunt had ant legs or people legs.— kelly
- I used to think a female daddy-long-legs was called a "mummy-long-legs".Anon
- I used to think the height of your shadow is the height you would be when your older. LOL :)— Kaitlyn
- I used to believe that if I wet my legs in the sea I would become a mermaid.
— andrea - that pickles were octopus legsAnon
- i used to believe that when you did the splits your legs would fall off.Anon