I thought in the song Zombie by The Cranberries she was not saying "In your head, in your head, zombie, zombie: but rather "In your head, in your head, ze army, ze army" (i.e the army said with a German accent, and for some reason it didn't occur to me that she didn't have a German accent any other time she sang..)
A childhood belief about misheard lyrics

others believed things like this
- German tiger tanks shot out tigers, the invading army would get mauled to death by all the tigers— Bob
- I used to believe that the salvation army was an actual army.Anon
- That there was a zombie living behind the bathtub in the upstairs bathroom.Anon
- my sister when she was little thorght head lice tried to borrow into her head to get to her brainAnon
- I used to belive that zombie hands would burst trough the floor and grab my ankles.Anon
- i used to belive that if i fell on my head my head would come off while i was doing a cartwheelAnon