When I visited the public library as a little kid, I assumed most of the books in the grown-up section were filled with pictures of people "doing it".
A childhood belief about reading

others believed things like this
- There were no writers behind children's books--they just magically appeared at the library! Anon
- When I was 3 I assumed that my parents were 18 and that every grown-up was 18.Anon
- i used to believe that people's buttocks were plump because of the poo filled in it— Diesa
- I used to believe that as I ate food, I filled up, and that once I filled up completely, I would die. Anon
- I used to believe that everyone in pictures could see me so i turned all of the pictures in my house backwardsAnon
- when i was little, i thought that a con artist was a person that painted pictures of people commiting crimes— kimkim