My dad used to snore while sleep.My mom told me that "Don't open your mouth like your dad.Then some frog may get into your mouth and you will sound like youe dad".I beleived in until i was 16.
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 belive that if i put my foot in my mouth, I would get foot-and-mouth illness— Emily Sathrota
- I used to believe that if you told a lie, Dragonflies will come and sew your mouth shut. For real.— Casey
- I was told that if one doesn't cover their mouth when yawning that their soul would escape.Anon
- i used to beleive that if you chewed gum it woul give you warts in your mouth my sister told me this— sunney jim of the pearl