When i was little i thought everyone except me was an alien but covered themselves in human form so i wouldn't see them, so I would pretend to be doing something and turn around really quickly to catch them out, i never did.
A childhood belief about aliens

others believed things like this
- I thought the ball-headed person in the Bic logo was an alien and communicated using alien-like noises.Anon
- I used to believe that if you used people shampoo on a dog, the dog would turn into a human.Anon
- Oh oh, I'm an alien, I'm a little alien...
Legal maybe?— Marina - When I was little, I thought the singular form of geese was "gee"— Kate
- when i was little i used to think i was the only human and everyone else were robots trying to act human.— Spikey
- I thought when you get married you have to fill out a form to get a baby and then you get one.— Danielle