When I was little I used to think when you have watched a video I couldn't rewind it back to the beginning, because actor or actress would start doing things backwards in real life when the film rewinds. So I never used to rewind them back to the beginning. It has become a little annoying habit now.
A childhood belief about films

others believed things like this
- I used to beleive that in order to rewind a film the actors would have to re-act the whole movie backwards. — movies backward
- I used to believe that the heart at the beginning of the I Love Lucy Show was made of real chocolate.— Krissa
- I thought the guy who got shot at the beginning of Gunsmoke was replaced every week by a live guy.— Monica
- When I was little I believed when an actor died in a movie, he died in real life.— Ben
- I used to think that fire trucks and ambulances drove all the way back to the station backwards.— Tim
- I thought there was some video games so hard that if you died on them you also died in real life!— Kakuri