A few years ago I heard a funny story on NPR about some recordings of a popular singing act from the 1920s or so. Their songs were generally bawdy, and one was sort of in the form of an advertising jingle for "Poontang" as if it were some sort of product that could be bought in a store. According to the broadcast the singing duo had cans printed up like comemrcial products bearing a label along the lines of "Grade A, old-fashioned POON TANG." They would give these and other novelty items away to audience members at their performances. They played a sample of the song, and I had to admit it was very funny.