When I was about 2 years old I woke up one morning in my parents bed and promptly showed my mother my penis then asked to see hers. Apparently I was quite surprised once I found out the truth.
For all I knew I was going to grow boobs someday.
A childhood belief about reproduction

others believed things like this
- when i was about 4 or 5, i believed that if i pulled on my nipples, i'd grow up and have big boobs.
— JW - I used to believe that if I fell asleep lying on my front that my boobs wouldn't grow. And they didn't.— Booey
- I used to believe that cow udders were hollow bags full of milk.Yet I knew that human boobs were solidAnon
- Apparently, when I was little, I used to try and grow chickens by 'planting' their feathers in the ground.— Mat
- im a girl and i used to think my mom had a penis and i would eventually grow my ownAnon
- I used to think that oral sex was talking about sex. I was wrong when I found out the truth.Anon