In a moment of enthusiasm (insanity) while buying dog food at the farm store I bought Master a new toy. Evidently this is what is called a driving whip. It is about 4 feet of handle and 18" of lash.
After three strokes I leaped out of position and said "Ok, this was a mistake". Of course he made me get back there and finished making me nice and stripey. After a dozen more it actually seemed like maybe it wasn't so bad.
Here's a picture culled from the interwebs for an approximation: