I use to believe that pregnant women got that way because they ate a watermelon seed, and it grew in their stomache.
A childhood belief about getting pregnant

others believed things like this
- when you eat the seeds from a watermelon a watermelon will start to grow inside your stomache.Anon
- I believed that women who wanted babies ate a seed, which then grew into their baby. — World's Worst Scientist
- I used to believe that if you ate a watermelon seed you would grow a watermelon tree in your stomach!!!— Eskimo
- I use to believe (thanks to my Mom) that if I swallowed a watermelon seed a watermelon would grow in my belly.Anon
- i used to think if you ate a watermelon seed then after a while you'd become a watermelon
— olga british-girlyman - If you swallowed a watermelon seed it would grow in your belly— Rachelle