When I was young, I thought we closed our eyes in church during prayer because I was convinced that God and/or Angels came down from heaven to hear our prayers, so I would always open my eyes to see them. And I was always disappointed when I didn't.
A childhood belief about prayers

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
- 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
- I used to believe that when I closed my eyes, nobody could see me. — Jens
- I used to think if i closed my eyes noone could see meAnon
- My sister used to think that nobody could see her if she closed her eyes.— Dave
- I used to believe that when you closed you eyes you were invisible and no-one could see you!— Andrew