I still have problems with understanding lyrics, but as a kid, two songs struck me as very powerfully written, to the point where i wasn't mature enough to grasp their true meaning: one was a Gordon Lightfoot song, which I heard as "Before the green dark forest decided to be real" (was too silent to be real) and the other was a Leonard Cohen song: "First we take man habit .... then we take the men!" (First we take Manhatten, then we take Berlin) I still prefer my early interpretations.
A childhood belief about misheard lyrics

others believed things like this
- the beatles song 'mean mr mustard' says "shes a real go-getter", i was sure it was "shes a real coconut"...— sally
- When I first heard Bruce Springsteen's song, "Born in the USA," I thought that the song was "Porn in the USA"Anon
- in the song with the lyrics "take your passion" my sister used to always think it was "take your pants off"— Steped
- I used to think that when a movie was 'based on a true story' it was happening for real then and there— Tom
- My mum always thought the lyrics to macy grays song was i try to say goodbye to my chook.— alana
- i believed that michelle gayle's sweetness song contained the lyrics shade in sheep shit!— andrew