I always thought that all girls were born with a little tiny baby in there stomaches, and as they grow, the baby would grow with them and the girls wolud eventually get pregnent.
I've been telling my twin sister this for the longest time.
A childhood belief about reproduction

others believed things like this
- When I was 5 I thought that baby boys came from men and baby girls came from women...— Gaz
- How could Baby Jesus be born on Dec 25th, get tall, grow a beard and then die, all by Easter. Whew!— Joe
- I used to believe that men had baby boys and women had baby girls.— Janis Smith
- When I was little I thought that only little girls had nipples, and they went away when you grow up. — Cutie
- When I was little I thought girls had "man parts" as well, but it just took longer for them to grow.— person
- Until I was five, I used to think that women gave birth to baby girls and men gave birth to baby boys— Cassidy K