This one is a bit obscure, but my dad once told me that humans can be put down in Sweden, like with animals at the vets, and although he was obviously joking, Sweden is still a high rate suicide country, so that must be why he thought of it. Still funny that I believed it anyway.
A childhood belief about people

others believed things like this
- When I was young, I used to wonder what if the animals turned into humans while the humans were away.— Kirk
- I used to believe when I was a child ,
during xtmas time animals speak like humans after 12 pm— lan - Someone told me People and fish went to the same place.I thought they meant humans get flushed— MrK
- From when I was five until I was about seven, I thought humans had evolved from bears, not apes.— Anthropology Major
- When I was young, I honestly believed that I would die before I reached high school. Anon
- when i was 2 or 3 believed that i had lots of animals in my tummy it made sense my mum had baby in hers.— kjc