For ages i thought the words to Mrs Jackson (can't remeber who its by but its quite recent) actually said 'its my british accent' until i was caught singing it in front of my friends - it made sense at the time!
A childhood belief about misheard lyrics

others believed things like this
- I really, truly thought that Michael Jackson and Janet Jackson were the same person. Anon
- my friends mom used to sing "you talk sense" instead of utah saints.— nikki
- I used to believe that anyone who wasn't British (as I am) thought of themselves as foreigners!— "velveire"
- My younger sibling thought that Brittany was the name of the country where British people livedAnon
- I thought Scott Joplin and Janis Joplin were related. Two musicians with the same last name - it made sense!— Rita
- When I was 5, I thought cats were spawned from moss, since moss was so soft. Made sense to me.Anon