I have a cousin who... isn't all that bright. Well, she was listening to my iPod in the car, which was playing "Losing Grip" by Avril Lavigne.
The line was:
"I was left to cry, there waitin' outside there, grinning with the lost stare."
My cousin's version:
"I was left to cry, there waitin' outside, Cher, grinning with a nig*er."
I was just staring at her... that wasn't even remotely close!
A childhood belief about misheard lyrics

others believed things like this
- My cousin's mom told my cousin that pop makes you short. He probably believed it.— Molly
- I used to think a second cousin meant a cousin’s cousin.— Carlos Almonacid
- My dad would tell me that if the ice cream van was playing a tune it meant that he had no ice cream left. Duh!Anon
- We had a male cat that wasn't neutered. I thought his testicles were just the cat version of a butt.— Robyn
- I used to believe that Paul Simon was my cousin. He isn't.Anon
- My cousin, who's my age always thought there were two n's in the alphabet. 'l-m-N-o-p' and 'w-x-y-N-z'— Ashley