This is not my own belief, but someone else's, which I think is so cute that it merits being on this site: Being a curly-haired little fellow, this person thought as a child that all the other children must have curly hair, too. On his first day of school, however, he found out that they did not all have curly hair, some of them had straight hair. So he was shocked and did not want to go back.
A childhood belief about hair

others believed things like this
- my friend thought that if he ate the crust on bread, his hair would be curly.Anon
- untill i was about 8, i thought that eating crusts would give u curly hair.— Harry
- Bread crusts make your hair go curly— bowlax
- i used to think that bread crust would make my hair curlyAnon
- I used to believe that if I ate the skin on the roasted chicken I would have curly hair.Anon
- i used to believe that if u eat the crust on bread that ur hair would become curly...wow i was stupid :)— ~philbert~