I used to believe that if you inadvertently ate the bones of chicken or fish it would add extra bones to your skeletal structure.
A childhood belief about dangerous food

others believed things like this
- When I was about 4 or 5, I used to believe that instead of bones, we had metal pipes. — TL
- I used to believe that the chunks in chunky peanutbutter were actually bonesAnon
- I used to be believe that white sugar was made from ground up bones— shedrez
- Broken bones meant that your arm or leg was separated from your body.— Kelly Hanson
- My Mum told me that if you swallowed chewing gum, your bones would stick together inside you.— Pauliboy
- I used to think that instead of bones and blood and tissue that you body was made up of tuna.— m.n