I used to (and still do) bite my nails. I also used to really hate the crust on bread - the top part that has a kind of bittery gross flavour. One day my sister and her friend were babysitting me and I refused to eat my crust. My sister's friend told me that the crust had some stuff in it that helped hair and nails grow. I believed her, of course. The crust is different from the bread so I figured they put something on it to make it crustier. I believed it until about 10th grade, when I actually stopped and thought about it, and realised it was a silly idea. I felt pretty stupid.
A childhood belief about crusts

others believed things like this
- my friend thought that if he ate the crust on bread, his hair would be curly.Anon
- i used to believe that if u eat the crust on bread that ur hair would become curly...wow i was stupid :)— ~philbert~
- i used to think that bread crust would make my hair curlyAnon
- i used to believe if i ate the crust of bread it would make my hair curly— kate
- Since we receive bread at Mass, I thought he was called "Jesus Crust" Seemed pretty obvious!Anon
- We were told that the bread crust is more healthy than the centre.— Arnon