When I was 4 years old, I thought that every family had to have two children - no more, no less - and that there had to be one boy and one girl. And the older child was always the boy.
Then one day in nursery school a friend of mine started talking about his brother. I was astonished! I said to him, "You can't have a brother - you're a boy!"
I told my parents, and they explained that there can be any combination of boys and girls in a family.
A childhood belief about family

others believed things like this
- i used to think that every family had a brother and sister and they married eachother when they got olderAnon
- My older brother once told me that Aussie shampoo was made from kangaroo pee. I avoided using it for years!— Annie
- When I was a child, I used to think that one day my brother and I would be in the same grade at school.— Alexis Yahir López
- When I was a little girl, I believed that all cats were girls and all dogs were boys. :)— Mary Ellen
- My brother that is 6 years younger than me used to believe that in seven years he would be older than me.Anon
- I was about 6 and thought my family invented the fart because I never heard anyone outside my family do it.— Bob