My nephew thinks that there are really monsters in his bedroom making scary noises, but that's just the wind blowing from the window.
A childhood belief about monsters

others believed things like this
- i used to believe that if i looked at trees, the wind would start blowing. Anon
- I used to think that the tree branches moving was making the wind, not the wind making the tree branches move.— Jenny
- I knew lightning could come in through my bedroom window and kill me.
— Cyn - When I was little I thought that Shakin' Stevens was Elvis' nephew— Ali
- my nephew used to believe that when people died, they just needed new batteries.— p-daddy
- My nephew (age 7) thought tampons were plugs for diarrhea. Anon