One time when I was younger my family went out to dinner at a restaurant right next to a store called David's Bridal (wedding store, obviously). I did not know what "Bridal" meant, but I did know that you put a "Bridle" on a horse when you wanted to ride it. So I concluded that David's Bridal must be a horse store. It didn't help that there was a large statue of a horse nearby.
A childhood belief about reading

others believed things like this
- I thought the bridal veil was so that the groom wouldn't see who he was marrying.— Aretia
- I thought that since my grandpa and my dad's names are both David, than David Bowie must be my aunt's son.Anon
- I use to believe the sound that a car made when it was running low on gas was what they called horse power...— Bianca
- a donkey is just a small horse.Anon
- I used to think that beer was horse pee. Probably because that's what my mom told me...— Kara
- When I was three I used to believe that cow and horse are wife and husband.— xenia