When I was young, my mom always told me when she would brush my hair at night that she was brushing out the knots. When I asked her what the "knots" were, she told me this story about the "knots" being little monsters that sneak into little girls' hair at night, and unless they got brushed out at least once a day, they'd take over my head and I'd have knotty hair forever.
A childhood belief about hair

others believed things like this
- When I was younger, I used to believe that the boogey man would tie my hair in knots at night.— Jasmine
- My parents said that gnomes tied knots in my hair while I was sleeping. I had insomnia for years.— Daria
- I use to cover my head at night because I thought monsters would give me a bad hair cut while I was sleeping!— Amy
- I believed that I had invented reef knots.— Phil
- .. the knots in wood would turn into dinosaurs. I was petrified of pine cladding.Anon
- I believed that if you ate a piece of your own hair, a new strand of hair would grow on your head.— Ryo