i used to believe that if you left your door open when you slept at night, ninjas would come in and attack you. i have no idea where it came from, but i managed to convince my sister and my best friend that it was true. for about three months we would spend at least a half an hour before we went to bed practicing kicks and punches in case the ninjas managed to open the door.
A childhood belief about around the house

others believed things like this
- i used 2 believe when i left my closet door open at
night a skelleton would pop out and wave at me— bex - I thought if I left the door open too long, a dog would come from the cupboard in the washroom and eat me
Anon - My friend managed to convince a gulliable kid at various stages of school that he was superman and a robot.— naff
- i used ti believe when i blinked everyone turned into ninjas.— cheyenne
- I used to think that 'Child Locking' only worked on children and that older people could still open the door.— Anonymous Whistleblower
- I used to believe that if I slept with my mouth open that spiders would crawl in there and live in my stomachAnon