I don't remember this, but according to my parents, one Christmas my sister and I went around giving out "Herald Angel Rings," because we thought those were the words to "Hark! The Herald Angel sings!"
A childhood belief about misheard lyrics

others believed things like this
- I thought "Angel of the Moring", by Juice Newton said "just brush me teeth before you leave me"!!!Anon
- I used to believe that freckles were angel kisses.Anon
- When i was little i believed that clouds were cotton candy that angels lived in and rain was angel tears— Missy
- I used to believe I had a guardian angel named Salty... Salty because I didn't know if it was a boy or a girlAnon
- Did anyone else sing "Hark, the hairy angels sing"?— Jill
- When I was a kid I loved to eat onion rings, until I realized that they were made with onions.— Beth Pärssinen