I think I listened to Leadbelly singing that at least a hundred times, and everytime, he it seems to me he sang "aint gonna ring them yellow womens' doorbells." Since he is "almost done" (apparently with his time in prison) and would be thinking about what he would do when he got out, that makes more sense than the more fanciful verstions.

I say "I think" I heard it, because I just read on a couple web sites that Johnny Cash wrote the song in 1969. He definitely sang it in the movie. That was more than 10 years after Leadbelly died, so maybe I just imagined Leadbelly sang it. But I would swear I heard it in 1957, at the latest.