The version I remember from Military time in Korea had the following...
Dirty Lil from Prospect Hill, never bathed, and never will
Stink? god damn, I'd rather bathe in liquid shit than to climb that scaly hide, or suck that grisly tit!
As I remember. the basics are the same for a while...piss pot pete coming over the hill, etc... Lil tried the Oklahoma smother, but he learned it from his mother, she tried the Kansas twister, but he learned it from his sister...
The ending was Pete and Lil had a kid...they put it in the toilet, to see if it could float, but a big black turd rolled down its throat...thats all she wrote