I used to believe that broken limbs were contageous - like if I were to touch someone with a broken leg, my leg would break. I avoided people with casts on until I was about 7 or 8 and realized how silly that was. I've still never broken a bone, however...
A childhood belief about general

others believed things like this
- When i was about 5 I used to believe that Broken Hill was a broken hill. — Saad
- I used to believe that comets were pieces of the Sun that had broken off.— Carmen
- Broken bones meant that your arm or leg was separated from your body.— Kelly Hanson
- When I was a little girl I used to believe cats were broken because of their moter sound when they purr— Shaune F.
- i used to believe that a sign in a cafe bone-fide meal meant meat with a bone in it— roy
- I used to believe that if you touched Chinese people, they would break.— Christian