When I was small, my parents were watching a movie. I was not yet tired and wanted to watch too. When I asked what the movie was about, my mom told me it was about a monster that eats your feet.
From that night on I was afraid to stand next to my bed in the dark, because I thought the monster would come from underneath it and eat my feet.
A childhood belief about monsters

others believed things like this
- I thought the boogey monster was a monster that ate boogers at night in front of youAnon
- When I got my feet measured by the electronic machine, I thought that the machine will squash my feet!— Helen
- I Used To Believe The Monster Beverage/Energy Drink Was Monster Milk!— KellGirl
- I used to be afraid of Tina Turner. I saw her as a monster or something like that.— Kinha SP
- i used to be scared of under my bed and thought that my cat became a monster only at night.— sumayah
- I used to believe that EVERYTHING we did was being filmed for someone somewhere to watch as a movie— KatBird_27