When I was a little kid we had a square whole in our basement where a window used to be. The window was ground level and whever my brothers forgot their house key my middle brother Alex would slip through the window and run up stairs to let everybody in.
Anyways, I was constantly afraid that somebody would climb through the window and come upstairs and shoot me during the night. My brothers tried to reassured me by telling me that no grown-up could possibly fit through that window.
After that I was constantly afraid that some mean grown-up would make a little kid come in and do the job for them!
A childhood belief about around the house

others believed things like this
- I used to believe that the moon lived on top of our house because I could always see it from the window.— Classic NYer
- My mom used to tell us kids that if you put your arm out of the car window,that it would fall off.— Kathy G.
- When I was little I thought a widow was someone who stares at you through a windowAnon
- I knew lightning could come in through my bedroom window and kill me.
— Cyn - I used to think there was a crayon called "window color." Turns out there isn't. — Not the brightest crayon in the box
- when i was a kid i used to believe that the water drops was racing on the window when it was raining outside — Emeline