My grandpa told me that edible part of the watermelon was blue until you cut them open.
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
- when you eat the seeds from a watermelon a watermelon will start to grow inside your stomache.Anon
- i used to think glitter was so awesome and edible. i liked having shiny teeth.Anon
- 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
- A friend of mine thought that some olives grew with red edible pits (pimentos).— HA