I always thought (right up until adulthood) that the Gabrielle song 'Dreams' had the word 'Brainscan' instead of 'Dreams can (come true). It seemed to make sense because some other lines go 'You know you have to have hope, you know you've got to be strong'... I suppose I was a morbid child...
A childhood belief about misheard lyrics

others believed things like this
- I thought the song Shattered Dreams was acutaly "Shadow Dreams" and wondered what shadow dreams were— Golgademon
- i thought split personalities were like having dreams. the dreams i had were all my personalities!— Odd Dreamer
- i used to think that adults did not have dreams!Anon
- That if you hit the floor from a really big hieght in you dreams you die— Danielle
- I, to this day, believe that when I can't sleep at night it means I'm awake in someone else's dreams... — Turner
- I used to think that dreams were events that really happened, I just couldn't remember them when I was awake.— Warren