I'm the guy who started this thread. I thought I had signed in as Tunesmith. Anyway, the thread title was suppose to be witty or tongue-in cheek, and I'm sorry I used it now as it seems to have deflected attention away from the thrust of my posting i.e. that Tom Paxton's inclusion of the " marvellous rear" reference added a sense of reality to the song that a lesser writer would have never have included - or even thought of. On a personal level, at the time( 30 odd years ago ) I was taken aback by the frankness of the line. And as I said previously it seemed to open doors in my mind as to what could be included in a song.