Just recently, my school's high school dance team danced to Madonna, Material Girl. The original lyrics are,
some boys kiss me, some boys hug me, I think they're ok.
My version was,
some boys kiss me, some boys hump me, I think they're so gay.
A childhood belief about misheard lyrics

others believed things like this
- I never knew why boys had to lift up the toilet seat...until my friend told me that boys had bad aim.Anon
- I used to believe the Beastie Boys were a boy band. Well, the name sounds similar to Backstreet Boys!Anon
- I thought the lyrics to "We're going to Ibiza" by the Venga Boys was "We're going to eat pizza"— ShannonOfDoom
- When i was younger i believed that a cat was a girl and dogs were boys.Anon
- When I was a little girl, I believed that all cats were girls and all dogs were boys. :)— Mary Ellen
- I used to think the lyrics of "Boys of Summer" said "poison summer"— Lindsay