This didn't seem to belong in the old Frankie and Johnny thread so I'm inserting it here.

This is a verse I've heard and sung most of my life that I've never heard anyone else do. Perhaps someone knows something of its origin.

Frankie said Judge, I'm so sorry,
This thing has come to pass,
But I didn't shoot Johnny in the first degree,
I shot him right in his trifling ass,
He was my man...

Thanks,

      - Mark