I remember a hearing a friend singing along to Cotton Eyed Joe and she thought the lyrcis were "Where did you come from, where did you go, where did you come from to cut my toe".
It was widely held at my school that the words to Sly and the Family Stone's Family Affair were "Newlywed a year ago/But you're still shagging each other out" - took me a long time to realise it wasn't