Until my mom was in high school, she didn't know that babies were made by having sex. She knew that people had sex and people had babies, but didn't know one led to the other. She contributes this to having gone to a Catholic school through 8th grade, and she said the only video she saw about it in school was a boy and girl kissing on a date, and then the girl in the doctor's office after having thrown up in the toilet.
A childhood belief about reproduction

others believed things like this
- When a "mean girl" in early grade school asked me if I was a virgin I answered "no I am catholic."— Hilary
- i used to believe that babies were made out of spit from people kissing too much, lol.— ecila
- I used to believe that boys had boy babies, and girls had girl babies.
That was when I was 3-7. I'm 15 now.— Stefanie Michelle - I used to believe that the people who take your blood at the doctor's office were vampires. — Andy
- I used to think that once people turned 30, they didn't have sex anymore. 30 was the cutoff date.
Anon - Before I knew about death, I used to think people turned back into babies again after they got old. Anon