When I was a child, before I went to bed every night I would make sure my hand held mirror was turned mirror side down because I thought it would lose it's reflexion if exposed and not being used for that long a period of time.
A childhood belief about mirrors

others believed things like this
- when i was young i used to believe that my image on a mirror would come to life if i broke the mirror.Anon
- I used to think that there is another world on the other side of the mirror, where everyone is named Philip.Anon
- Like most kids growing up, I believed there was an upside-down word on the other side of the mirror.— Taylor (14)
- I believed that if I looked too long in the mirror admiring myself the Devil would appear.— Paul Elletson
- When I was little I was conviced if you said twinkee in a mirror 3 time a foot would appear. Anon
- I had a fear of seeing a person in the corner of the mirror(most of the time a morlock)— Shane