Until I was about 7 or 8, I used to believe that if you ate a watermelon seed you would end up growing a watermelon inside your tummy... I didn't realize that the women "growing watermelons" were actually just pregnant.
A childhood belief about watermelons

others believed things like this
- If you eat watermelon seeds a watermelon will grow in your tummy and vines will come out your earsAnon
- 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
- when you eat the seeds from a watermelon a watermelon will start to grow inside your stomache.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