I have ADHD, and when I was in school it wasn't understood very well, thus I had trouble fitting in. I concluded that since I was obviously different, I was therefore an alien. I even told some of my (1st grade) classmates about "my planet" and they believed it!
A childhood belief about i'm different

others believed things like this
- Through second grade I always concluded the pledge with '...indivisible, with liberty and just a straw.'— George
- I believed that all Germans were Nazis because of one of my classmates.— Joseph
- I thought the ball-headed person in the Bic logo was an alien and communicated using alien-like noises.Anon
- A[n] nth grade teacher only had to finish the nth grade when he or she was in school.— MD Caruso
- I believed a star that I later found out was the planet Venus was the Tooth Fairy— Jillybean
- Oh oh, I'm an alien, I'm a little alien...
Legal maybe?— Marina