Around Christmas time my parents used to play this kids' song that went "I'm gettin' nuttin' for christmas, Mommy and daddy are mad" Only I always thought they were saying "Mommy and daddy are men." This didn't even strike me as funny, growing up, as I was in the Castro district of San Francisco.
A childhood belief about misheard lyrics

others believed things like this
- I used to believe that Mother Nature was The wife of God. She was the mommy and he was the daddy. — Dawn
- When I was a boy I flushed my fish down the toilet thinking that it would go to its mommy and daddy.— Jeremy Clark
- I was told that for every christmas carol i sang before christmas time santa would give me one less present!— K
- I thought that a "sugar daddy" was a father who let his kids eat all the sugar they wanted.Anon
- I use to think the known Christmas song "in excelsis deo" was en chelsea's dayo— Mike Simmons
- I didn't know Reindeer existed, I thought they were just christmas animals for storiesAnon