I used to believe the song "Hey Jude" by The Beatles was "Hate Jews" I thought they might be rascist for a few days. Then I read the title of the song.
A childhood belief about misheard lyrics

others believed things like this
- I thought the song "Party Time" by Moby was actually saying "heart attack" (this was before I knew the title)— Elviessa
- I used to think that the title of Barry Manilow's song "Looks Like We Made It" was "Looks Like Tomatoes".— close2nd
- The Beatles song "Ticket to Ride" always came out "She's got a tick in her eye."— Kurt
- I thought the song "Karma Police" was actually saying "call the police" before I learned the title— Alberto Richardson
- I used to think the song Bette Davis Eyes was called 'she's got better days besides'.— JJ Simpson
- My daughter thought Paul McCartney was singing "Hey Dude" instead of "Hey Jude". Anon