In "YMCA" my friend used to believe that the line "Young man!" was actually "Gonads!". Her brother never bothered to correct her...
A childhood belief about misheard lyrics

others believed things like this
- When I was younger, I think i can change my brother with a friend— Mbaclé du 55
- My friend Chris told me that when he was young, he thought that "elemeno" was the letter between k and p.— Jocelyn666
- When asked why he didn't finish eating the crust from his pizza, a young friend said "I don't eat the bone".— Dustin
- I used to believe that a "punch line" meant a line of people waiting to dip punch from a punch bowl.— Sheila
- My 7 year old nephew holds the opinion that the correct name for a pidgeon is a "city chicken".— Bastard
- I believed that wind was caused because the trees moved. I was completely sure my conclusion was correct.— Glenr