When I was little I had two good imaginary friends that I used to play with all the time. When they stopped coming to play with me (i.e..I grew out of it) I assumed that they must have died. My mother apparently found me sobbing my eyes out at the kitchen table. I was mourning their death for weeks...
A childhood belief about imaginary friends

others believed things like this
- That only men farted. I literally started sobbing the first time I realized I farted.Anon
- I used to think that the sleep in my eyes at the breakfast table were toast crumbs.— crawford
- I thought that when you died, you had 2 weeks to be dead then you would magically wake up again, but as a babyAnon
- I used to believe that newborn babies didnt open their eyes for a few weeks like kittens :) — Cash
- I used to think that if you were scared "half to death" that you only had one scare left before you died.— Bush Hiddenofsky
- I used to think that "mourning doves" were called afternoon doves starting at noon!
— Megaroo