When i was about 5, some kid told me that if you sleep with your mouth open evil spirits enter through it.
A childhood belief about sleeping

others believed things like this
- my brother told me that if i ride my bike with my mouth open i will swallow my tounge. Anon
- I used to believe that if I slept with my mouth open that spiders would crawl in there and live in my stomachAnon
- I used to think that when people died, their whole bodies were taken up to heaven, not just their spirits.— Karrie
- I held my breath near cemeteries because I thought it would be rude to inhale spirits. Anon
- We were told at school by the evil dinner ladies that apple pips contained arsenic.....Anon
- I used to believe that if you told a lie, Dragonflies will come and sew your mouth shut. For real.— Casey