While singing the Australian Anthem in primary school, I was utterly convinced the first line (actually saying "Australian all let us rejoice") said "Australians all eat ostriches."
I found out otherwise when my teacher overheard my loud singing and pulled me aside to get me in trouble. I was very confused.
A childhood belief about misheard lyrics

others believed things like this
- I used to believe the angels were in the speakers at church because of the loud female voice singing.Anon
- When I was about seven, I was utterly convinced that chickens had leaves and trees had feathers.— Confused
- i used 2 think ostriches didnt have wings— venti
- When I was at primary school I used to believe you could only marry someone who was the same height as you!— Lucy
- I used to believe opera singing was a language all its own.— Rachel
- I used to think that singers couldn't talk-they could only communicate by singing.Anon