I had an "imaginary" friend named Shiny Moll when I was about 5. I was so adamant about her being real that my parents believed in her too. I told them she was coming for dinner one night. They set a place for her, waited and waited....eventually after numerous Shiny Moll non-interactions, they asked my preschool about her and thats when they stopped believing.
A childhood belief about imaginary friends

others believed things like this
- I used to believe the earth was covered with shiny cloth at night by God.. — akz
- i used to think glitter was so awesome and edible. i liked having shiny teeth.Anon
- i use to believe that bald people had such shiny heads cause they didnt eat there vegatables — TEM
- I used to have an imaginary friend named Mr. Nobody. He would protect me from my imaginary enemy, Bad Elmer.— Kdees
- In childhood, I waited behind the theatre, after the Cinema, hoping to see the artists came out .
— mprnair. - I waited for the mail to come on my 11th birthday so that I could get my letter to Hogwarts... It never came.— Charlie