My little cousin heard some Justin Timberlake music, and he thought "Now everybody dance" was "Now everybody gas" and he constantly asked me, "How do you gas?"
He got a jump-start on potty-humor.
A childhood belief about misheard lyrics

others believed things like this
- I used to think that if I was swinging on a swing fast enough, I could jump off it and start flying.— Nick
- My music teacher once said that music in an electrical piano was made by little tiny men that lived inside it.Anon
- My brother used to be scared to poop in the potty. He thought that he was pooping out his bones.— Lillyth
- I used to believe if you listened to to music upside down the music would be backwards— HOopty
- I used to think that AM and FM stood for "American Music" and "Foreign Music."— Sylvia Fowler
- I thought that the jetstream from planes was white paint. Which was constantly poured out from the plane.— Tore