Up until about a year ago, I thought that in the George Michael song "Father Figure" he was saying "I'll be your bottom feeder". I thought it was a reference to a specific sex act common among gay males...
A childhood belief about misheard lyrics

others believed things like this
- i thaught the michael jackson song billy jean song said Janet's not my son Anon
- I thought that all cats were the females, and that the dogs were the males.— opps guess not
- i thought I got one year older when my family sang the birthday song.— I am the ghost
- I thought Busch Gardens was a public garden owned by George W. Bush.Anon
- When I was little I thought the microwave was the Michaelwave because my name is Michael.— Michael
- i used to believe that males' poo came out of their willies— Helen W