I have two from the late 90s...
1. Three Lions - Jewels remain still gleaming instead of Jules Rimet still gleaming
2. Blue by Eiffel 65 Aberdeen I shall die Aberdeen I shall die
A childhood belief about misheard lyrics

others believed things like this
- I used to believe that sea lions were actual lions that lived in the sea.Anon
- I used to believe that I would never grow up, because I "wanted" to remain a child. Ha. That one fell throughAnon
- Eifel 65 - Blue
I'm Blue (if I was green I would die...)
[I'm blue, da ba dee, da ba di.]— Matt - I had alligators and cartoon lions under my bed.— ruth
- I used to believe that lions married tigers. Anon
- I used to believe that tigers were girls and lions were boys— Ruth