I would run up to my parents with my shoes and ask "Which one goes on which foot?" They'd point to this one goes on this foot, that one goes on that foot. Then I'd hold up my socks and ask the same thing. Instead of saying that it didn't matter, they'd point to each sock and say this one goes on this foot... eventually I figured out how the shoes worked, but the logic behind the left vs. right sock eluded me for a very long time.
A childhood belief about appearance

others believed things like this
- When I was a kid my dad told me that in a package of socks there was a right sock and a left sock.— Christina
- I used to belive that if i put my foot in my mouth, I would get foot-and-mouth illness— Emily Sathrota
- When I was little I was conviced if you said twinkee in a mirror 3 time a foot would appear. Anon
- When i was little i used to think that my foot was a "naughty part" that no one else was supposed to see.Anon
- when i was 6 i used to belive if u ate ur toe nails u would grow a foot in ur stomach— chris
- that using athletes foot cream would instantly make me an athlete. — Kate