I used to believe that if you didn't wash your hands after going to the bathroom, you couldn't leave the bathroom.
A childhood belief about fear of

others believed things like this
- My mum used to tell me that you couldn't drink water out of the tap from the bathroom as it was poisonous.Anon
- When I was little, I believed that if I didn't go to the bathroom quick enough, I would actually explode.— Coco S.
- I used to believe that only 'poor' people had to go to the bathroom, that 'rich' people didn't.Anon
- I used to believe teachers never had to go to the bathroomAnon
- When I was little, I thought it was harmful to eat while you were going to the bathroom. Anon
- There's a bad moon on the rise = There's a bathroom on the rightAnon