I had this weird thing where my mum would give me a back rub to stop me from being worried. After a few tries, we found out that talking about my worries was more effective, but when she did the back rub thing she claimed that she was "sending my worries to space". That gave me the belief that emotions were physical things that were just intangible and invisible (like water vapor) and I was worried that if she sent my worries to space, it would cause aliens to become randomly afraid because they'd "possess" them or something.
A childhood belief about aliens

others believed things like this
- I totally believed my siblings when they told me the family was aliens and had a space ship in the garage.— cully
- When I was really little I used to belief that fireworks dropped out of the sky from outer space.— davesgrl2001
- When I was a kid I always thought that a water tower was the robot from the TV show "Lost in Space".— sherryj
- i used to think that vacuum cleaners had little piece of space inside them because space is a vacuumAnon
- I use to beleive that bitting my nails will give me powers to stop being afraid. — scaredy cat
- when i was little, i used to believe that airplanes goes out of space.Anon