Because my mom and dad once told me that while they were shopping (I was about five or so) a woman had her eyes literally pop out and that this would happen to anyone who had big eyes. After a while they told me that I had big eyes and I shouldn't open them too wide or they'd pop out. It went so far that I was scared my eyes would pop out whenever I had a headache or my eyes hurt. Now I know it's not true.... At least I hope it's not...
A childhood belief about eyes

others believed things like this
- When I was little my friend told me that if you snease with your eyes open you eyes will fall out!Anon
- I was born brunette with brown eyes and dark hair, i thought people with blue eyes, had water in them.Anon
- when I was young I used to believe if I squinted my eyes and it was windy my eyes would stay like this forever— Jeanne
- if I watched too much TV, I would get 'googly eyes' as mom promised, and my eyes would pop out of my head.— claire
- I used to believe that if you stared into a cat's eyes, my eyes would turn that color too.— silvia
- I used to believe that if you pressed on the inside corners of your eyes that your eyes would pop out.— Sabrina