I used to hear so much about imaginary friends as a child that I thought every child had one and that everyone would think I was weird or rebellious if I didn't.
So I pretended to have an imaginary friend. I was very proud of convincing everyone that I actually believed she existed.
A childhood belief about imaginary friends

others believed things like this
- I used to have an imaginary friend named Mr. Nobody. He would protect me from my imaginary enemy, Bad Elmer.— Kdees
- When I was a child, I believed that the little mouse Perez existed.— David Montoya Velez
- I thought my imaginary friend was real and he imagined me
I hope he still believes I existAnon - As a child I used to think that the toothy mouse existed.— Jordi Comendador
- my aunt used to have an imaginary friend who instead of having blood had 7-up in her veins.Anon
- When I was about 6 or 7, I had an imaginary friend, who left for ice-cream one night. He never returned.— His name was Jimmy