When I was a small child, my brother told me girls were girls because a ninja came when they were just born and chopped off their "weenies".
A childhood belief about rude bits

others believed things like this
- i used to think boys were born from men and girls were born from women— swag lad123
- I thought that the difference between girls and boys was that girls have teeth.
Anon - I used to believe all babies came out as girls and later on in life some of those girls turned into boys — Tom
- When my mom was a child, she thought that while girls had periods, boys had hemorrhoids!Anon
- When my brother was little, he believed that girls peed out of their boobs.— Emily
- In first grade a boy told me that he could see girls naked with his microscope lens. I beleived it for years.— Jeanette