I heard Pete Seeger do this in about 1962...and, as you might imagine in things like this, it was slightly different....one of his lines ran:

"Seven sailing ships sailing from Orinoco to Madagascar on Prince Thegar's wedding day"

I guess people folk-process this as necessary...a few lines remain basically the same and others change wildly...except that, with the 'copy and paste' ability of the WWW, there is going to be less 'processing'...folks are gonna find pieces...post them...and most of the rest are just going to 'look it up'...and databases like DT will serve to slow, if not quite stop, the process...(wonder if Pete still remembers his routine...and where he got it?)