A classmate said that if you didn't have a birthmark it meant you were an alien. That day I went home and stripped to find no birthmark. My dad found me crying and explained that if you didn't have a belly-button, you were an alien. I was so relieved because I knew I had one of those!
A childhood belief about general

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
- Untill I was about 15 I thought that the birthmark on Mikael Gorbachov's head was actually a map of the world.— Rob , Solihull
- Oh oh, I'm an alien, I'm a little alien...
Legal maybe?— Marina - I used to think that my cat was an alien that had come to teach me how to be good!— laz
- I used to belive that my teacher was a alien unfortunately this was true mum and said. — peter
- I used to think that green poop ment you were an alien.— fartcheeks