My older sister used to believe that if you swallowed the seed of a watermelon, you would get pregnant; she doesn't eat watermelon to this day!!!
A childhood belief about watermelons

others believed things like this
- I use to believe (thanks to my Mom) that if I swallowed a watermelon seed a watermelon would grow in my belly.Anon
- If you swallowed a watermelon seed it would grow in your belly— Rachelle
- I used to believe that if you ate a watermelon seed you would grow a watermelon tree in your stomach!!!— Eskimo
- I used to believe that if I swallowed watermelon seeds, I would get pregnantAnon
- i used to think if you ate a watermelon seed then after a while you'd become a watermelon
— olga british-girlyman - If you eat watermelon seeds a watermelon will grow in your tummy and vines will come out your earsAnon