Here are some lyrics and words that I have heard wrong:
Forever in Blue Jeans was The Reverend Blue Jeans
Night Fever by the Bee Gees: Sweet City Woman was Two Headed Woman; I sort of knew that one was wrong
Sara Lee Commercial: I thought it was Nobody Does It Like Sara Lee, not so, it is Nobody doesn't like Sara Lee. Horrible grammer.
A childhood belief about misheard lyrics

others believed things like this
- The song "Reverend Blue Jeans" turned out to be "Forever in Blue Jeans." Who would have believed that?— music lover
- I used to think that neil diamond was singing about the reverend blue jeansAnon
- I always thought the lyrics in I'm Blue were "I could beat up a guy"— Trisha Gaurav
- Eifel 65 - Blue
I'm Blue (if I was green I would die...)
[I'm blue, da ba dee, da ba di.]— Matt - You know the eifel65 song "Im blue da be da ba di"
I thought he said "I'm blue I'm in need of a guy"— Anna - In 'Call Me Maybe', I misheard 'Ripped jeans skin' as 'Rich cheese skin'. — Carly Rae Cheddar