I thought that I was the only one that believed this until I came to this site.
My older sister once told me that if you swallow a black watermelon seed that it would grow into a watermelon in your tummy. I would only eat watermelon if all the black seeds were taken out. Come to think of if I still take out all the black seeds.
A childhood belief about seeds

others believed things like this
- If you eat watermelon seeds a watermelon will grow in your tummy and vines will come out your earsAnon
- when you eat the seeds from a watermelon a watermelon will start to grow inside your stomache.Anon
- I used to beleive that if you ate a black watermelon seed a tree would grow in your stomach— anonymous
- 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 that if i ate watermelon seeds they would grow out of my ears.— Catherine