When I was little, and my mom was trying to potty train me, my grandad and my uncles (who weren't much older than me) told me that there was a potty monster and if I sat on the toilet, it would come and get me.
A childhood belief about fear of

others believed things like this
- I used to think people had a "potty mouth" if they had been drinking out of the toilet.Anon
- My brother used to be scared to poop in the potty. He thought that he was pooping out his bones.— Lillyth
- that bathroom tap water was recycled "potty" water from the toliet. — livingdeadgirl
- I thought my grandad would get older, so I asked him 'What do you want to be when you're older?'.— Afterlife Dreamin'
- My mum told my older brother that dogs weren't allowed in London.— Fiz
- My Grandad told me he invented carrots.— Nicole