Until just now, I always believed that in Fall Out Boy's song 'Sugar We're Going Down', instead of saying 'wishing to be the friction in your jeans' I always thought it said 'wishing to be the freak s**t in your dreams'. Makes me laugh.
A childhood belief about misheard lyrics

others believed things like this
- I used to believe, that since I wished upon a wishing well, I really would grow up to be a dinosaur.— Azi
- My friend and I used to believe that we could gain special powers by pressing our bellybuttons and wishing.— Andrew
- The song "Reverend Blue Jeans" turned out to be "Forever in Blue Jeans." Who would have believed that?— music lover
- I thought the song Shattered Dreams was acutaly "Shadow Dreams" and wondered what shadow dreams were— Golgademon
- When my brother was little he heard the song "Le Freak" by Chic (Ahhh, freak out!) like this: Ahhh, free cow!Anon
- I thought that a "sugar daddy" was a father who let his kids eat all the sugar they wanted.Anon