When I was a child, I used to believe that the energy raised by thunderstorms opened a doorway between dimensions and that the dead were able to come back to this plane to visit. They were much like tourists and went "sightseeing" while they were here. The flashes of lightning were their cameras snapping pics of us as they looked in the windows and eyed the living.
Keep in mind that I stopped believing this before I was 10 years old. And I was raised in a household where my parents were amateur ghost hunters. So the paranormal was discussed almost everyday in my household. And the thought of being photographed in such a manner wasn't alarming to me. It was just one of those weird things that kids come up with and believe until harsh reality intrudes and pushes such fancies from their minds.
A childhood belief about thunder and lightning

others believed things like this
- I used to think you had to be an adult to drink household chemicalsAnon
- I used to believe that all my energy "came from my nipples and my back" I literally said that to my parents.— Eleanor R
- When I was younger I used to think I was raised by Ewoks.— Travis
- when i was a kid i believed i could make things happen just by snapping my fingers like in mary poppins!!Anon
- I used to believe as a child that t-storms (aka thunderstorms) where actually tea bags falling from the sky.— Samantha
- That when u opened all the windows on just one side of the car the wind would make it tip over.— Schmackalie