When i was about 9 I used to have this little game i played by myself out in the garden where i was the teacher and i taught an imaginary class "ball tricks"
This was basically just bouncing a ball and making up little bouncing routeens whilst running round the garden like a maniac trying to get to my "drill spot".
The problem was that our fences had giant gaps in, and all the neighbours thought i was a retard, shouting at imagiany people and running round like mad bouncing balls!
A childhood belief about imaginary friends

others believed things like this
- Bouncing on my bed and watching houses through the window I was sure they were literally bouncing with me.Anon
- A motorcycle was started by jumping up and down and bouncing on the seat.Anon
- I used to think volleyball was actually called "ball-y ball"Anon
- for the longest time every i used to think that Prince's "Raspberry Barret" said "round merry go round"— lin
- I used to think running for president involved actually running somewhere.— Artimage
- The two people in the Garden Of Eden were named "Adamandeve" and "Eve"Anon