I used to believe that parents could 'donate' naughty children to Amish families because they needed so many people to run their farms, and that during particularly hard seasons they would roam around and kidnap wandering or crying kids.
This is probably because my father used to threaten to give me to the Amish when I misbehaved.
A childhood belief about family

others believed things like this
- Migets were people who were bad when they were kids and there parents didn't let them grow up.— Teresa
- The lollypop man's job was to give children lollypops.
How disappointed I was when I met one. :DAnon - That Rabbit shed their tail when the seasons changed.— Jodi
- I used to think that the river police were there to stop naughty people from pulling the plug out.— Linda
- I knew that dairy farms have silos so I figured that they're where the milk is stored.
— marianne - My Dad told me that the big bales of hay wrapped in plastic sitting in the fields on farms were cow eggs.Anon