I used to believe in unicorns. I thought if I sat really still in the woods with a pure heart, one would come to me and be my best friend ever.
The problem was I also believed if my heart wasn't pure it would kill me with its horn. So I never tried to find one, for fear my heart wouldn't be pure enough.
A childhood belief about general

others believed things like this
- The song called heart of glass mixed me up as a kid. I heard "Heart and ass". — oops
- I used to think that when people had heart attacks someone came and stabbed their heartAnon
- I used to think that if you eat pig heart, you could grow another heart and be twice as healthier. Anon
- I thought that hydrogen was pure water (since I knew hydro- meant water) and H2O was impure some how— Hexetic
- When I was in elementary school, I believed my heart moved across my chest throughout the day.— Allison
- I used to believed that when I went to sleep my heart took a rest too, and didn't pump at all while I slept.— Lara