Actually this was my daughter's belief as a 10 year old. We moved to Saudi Arabia while the Iran-Iraq war was going on. We listened to oldies quite a bit. She thought when the Beach Boys sang "Ba-ba-ba, ba-Barbara Ann" they were singing "Bomb-bomb-bomb, bomb Iran". I think she believed it up until a few years ago.
A childhood belief about misheard lyrics

others believed things like this
- I used to believe that an atom bomb was a dragon in the sky.— Mazzkitten
- We knew a woman named Barbara Hannah, and I thought she was was in charge of Hannah-Barbara!Anon
- I believed that "oldies" were a genre of music still being produced. — UB
- My daughter thought Paul McCartney was singing "Hey Dude" instead of "Hey Jude". Anon
- When Madonna sang "let the choir sing" in "Like a Prayer", I thought she was singing "love by proxy"— Kristen
- i thought I got one year older when my family sang the birthday song.— I am the ghost