Up until I was nearly a teenager I believed that the Christmas carol "Silent Night" ended in "sleep in heavenly peas" and could not figure out why in the world ANYONE would want to lay in a bed of peas. I actually imagined a lady and a baby laying in a huge waterbed type piece of furniture filled with peas.
Also when I was younger I believed the song "Secret Agent Man" was really "Secret Asian Man" That one was pretty confusing too. But my dad thought it was pretty funny.
A childhood belief about hymns

others believed things like this
- When I was in preschool, the class bully told me that peas were actully cow boogers. Still won't eat peas.— Ren
- When I was young,I thought the lyrics "Secret Agent man" were actually "Secret Asian Man".— M.M.B.
- When I was little, I believed that my Dad worked in a factory where they painted peas green!— Hannah G.
- i used to believe that peas were toes — DJ
- I used to believe that catterpillar were the peas glued with each other— Umme Hani
- My mum used to tell me that baked beans were just peas covered in tomato sauce.— munky