My sister, at age 7, used to think the lyrics to the song "Born Free" went like this: Born free, as free as a Win-dow.
A childhood belief about misheard lyrics

others believed things like this
- When I first heard Matt Monro's song "Born Free," I thought he was singing "Porn Free."Anon
- When i was a tiny lad, I used to think drug free zones were places where you can get drugs for free— Spencer
- I used to think that money from ATM machines were free :p— qwerty
- I used to believe that priceless meant free.— Neo
- I used to think that "priceless" meant free.— DAAA
- That everything was free. You paid for nothing, money was just to look nice.— Blasia M