When I was little I heard "The 12 Days of Christmas" and I thougt the line,"a partridge in a pear tree" was, "a partra jennapear tree". I always wanted to know what kind of tree that was. Also, when my mother was little she heard "who wrote the book of love" as, "who wroter the moo cow now".
It's weird how it makes sense at the time and only seems silly in retrospect
A childhood belief about misheard lyrics

others believed things like this
- I used to think that partridge in a pear tree was "cartridge" in a pear tree(christmas song)— Erica
- When I was five, I believed God was big as a tree, a tree being the biggest thing I could convieve of.
— Chris - I used to believe that the Doller Tree store was an actual tree.Anon
- I used to believe that broccoli grew on trees. It looks like a tree, so it made sense, right?— Catherine...
- I used to think that the tree branches moving was making the wind, not the wind making the tree branches move.— Jenny
- I used to think that broccoli was a shrunken-down tree,Anon