I used to believe that if an adult woman ate a bunch of food she would get pregnant. That always explained to me why they got so fat while they were pregnant.
A childhood belief about getting pregnant

others believed things like this
- When I was little I used to think that as soon as you were married the woman automatically got pregnant.Anon
- Whwn I was like 8 I used to believe woman just got pregnant randomly. Anon
- A friend of mine used to think that you got pregnant from eating baby food.— Jemima
- I use to believe that the man peed in the woman to get her pregnant. Didn't know about sperm until sex ed. — das
- I used to believe that when a woman was pregnant the baby could play monkey bars on her ribs.— Laura
- I used to believe that when a woman was pregnant, she fed the baby with a tiny spoon through her belly button.— Marie