I grew up in a suburb about twenty miles from the Pittsburgh Zoo. As a child I was deathly afraid that a lion or tiger would escape from the zoo, jump through my second story bedroom window at night, and land on me as I lay in bed.
It never occurred to me how illogical it was to worry that a wild animal would make a bee-line for a little kid's house, twenty miles away, and feel the need to leap twenty feet or so into the air and right through his bedroom window.
Fortunatetly, all was not hopeless. If I just kept myself covered, even with just a sheet, then the big cat couldn't hurt me.
A childhood belief about under my bed

others believed things like this
I used to believe that some insects had twenty lives.LOLAnon- I used to believe that twenty was the largest number in the universe.— Bernardo Fernandez
- Just this moment I learned that earwigs do not go into your ears, i'm twenty-four.— Sheila
- I knew lightning could come in through my bedroom window and kill me.
— Cyn - I used to believe there were numbers called "onety" and 'twoty." I thought "twoty-nine" came before twenty.— CC
- I used to think a tiger was a female and a lion was a male... until I remembered Tony the Tiger.— Alysia