Sometimes later or other singers who were, what we might call, on the edge of the tradition and not really familiar with the words, picked them up and used them without knowing their meaning. For example we have the Carter Family singing in Dixie Darling about, 'to where the jelly roll growing'.
Similarly the BBC, who were very strict on censorship, and banned all kinds of fairly innocent stuff, allowed Little Richard's 'Good Golly Miss Molly' through, not knowing a miss molly was a male prostitute.