When i was little , my gram and papa used to always tell me when I was eating watermelon, that if I swallowed a seed a watermelon would grow in my tummy. So I would never eat watermelon unless it was seedless, because it scared me so much...
A childhood belief about seeds

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 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
- If you swallowed a watermelon seed it would grow in your belly— Rachelle
- 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