my older brother convinced me when i was 2 that their was an algea monster that lived in our pool (the algea almost never went away for some reason) and that if i swam in the deep end the monster would come up from the muck and eat me. I didn't swim in the deep end till i was 7.
A childhood belief about swimming pools

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 thought common as muck was a substance called commoners muck— oddsox
- I thought the boogey monster was a monster that ate boogers at night in front of youAnon
- I Used To Believe The Monster Beverage/Energy Drink Was Monster Milk!— KellGirl
- i used to believe that a monster lived in the garbage disposal. i would never go near the sink— Whitney
- I used to believe that, in cities, if you dug deep enough in anyone's lawn, eventually you'd hit the concrete.— Kevin Fox