When I was little, I believed that there was a whole other world inside the mirror, but it was exactly like the one we lived in.
Everytime I left a mirror, I'd say goodbye to the person in the mirror who looked like me and wished them a nice day.
A childhood belief about mirrors

others believed things like this
- I used to believe that there was a person in the mirror who looked exactly like meAnon
- 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 believed that if I looked too long in the mirror admiring myself the Devil would appear.— Paul Elletson
- I had a fear of seeing a person in the corner of the mirror(most of the time a morlock)— Shane
- I used to think that if I looked in a mirror for over 5 mins I would dissapere to Narnia!— Quako
- I used to think that there is another world on the other side of the mirror, where everyone is named Philip.Anon