As a child I was afraid of the deep end of the pool. I was a great swimmer. I always swam fine in a lake that was pretty deep, but I was convinced that sharks and piranna lived in the deep end of a pool. For some reason they mysteriosly dissipered when my parents swam with me.
A childhood belief about monsters

others believed things like this
- i used to believe there were invisible sharks in the deep end of the pool, thanks to my older brother.— Melissa
- I used to believe that, in cities, if you dug deep enough in anyone's lawn, eventually you'd hit the concrete.— Kevin Fox
- When I was a kid I though facial hair on a man is what gave them the deep voice — Adrian Z.
- I used to dig a super deep hole thinking it
would transport me to the galaxy — Rafaella - I used to believe that, in a deep and profound kind of way, the words "door knob" rhymed with "said so". — Katie
- I used to think that a "pool shark" was an actual shark that lived in a swimming poolAnon