I used to think that limes were lemons that weren't ripe yet.
A childhood belief about general

others believed things like this
- That limes were unripe lemons— Alan
- I thought pink lemonade came from pink lemons.Anon
- I used to believe that boys couldn't be teachers because they weren't smart enough. — Azz
- I used to believe that if a item wasn't "on sale" then you weren't aloud to buy it.— Meagan
- I used to think the word "european" had something to do with pee, and that kids weren't supposed to say it.Anon
- I used to think that adults spoke an entirely different language (not English) when kids weren't around. — Swordfish