I spent most of my childhood somewhere without any snow, and I read a comic where a boy explodes from getting a snow flake on his tongue.
The joke was because the snowflake was dangerous as it was the result of a nuclear winter but I didn't know what a "nuclear winter" was, so I thought that getting snow on your tongue would make you explode.
Thankfully, my father (who spent a significant amount of his childhood in Scandinavia) cleared that up pretty quickly.
A childhood belief about weather

others believed things like this
- i was convinced that snow was pink, i was devastated the first i saw real snow.Anon
- I used to believe that at the beach town where we spent the summer, they took the sidewalks in for the winter.— Missy
- I thought snow had diamonds in it because it sparkles when the sun hits it.— Giselle
- When I was a kid I thought Mary had a little lamb whose FLEAS were white as snow.— jen
- I used to believe that I could smell when it was going to snow.
(I still can!)— sw - I used to think that snow was rain still in the bag.— Robert