The old man headed straight for the only saloon in town, to clear his parched throat.
He walked up to the saloon and tied his old mule to the hitch rail.
As he stood there, brushing some of the dust from his face and clothes, a young gunslinger
stepped out of the saloon with a gun in one hand and a bottle of whiskey in the other.
The young gunslinger looked at the old man and laughed, saying, "Hey old man, can you dance?"
The old man looked up at the gunslinger and said, "No son, I don't dance... never really wanted to."
A crowd had gathered as the gunslinger grinned and said, "Well, you old fool, you're gonna dance now!" and started shooting at the old man's feet.
The prospector started hopping around like a flea on a hot skillet.
Everybody was laughing.
When his last bullet had been fired, the young gunslinger, still laughing, holstered his gun and turned around to go back into the saloon.
The old man turned to his pack mule, pulled out a double-barrelled 12 gauge shotgun and cocked both hammers.
The loud clicks carried clearly through the desert air. The crowd stopped laughing immediately.
The young gunslinger heard the sounds too, and he turned around very slowly.
The barrels of the shotgun never wavered in the old man's hands, as he quietly said;
"Son, have you ever kissed a mule's arse?"
The gunslinger swallowed hard and said, "No sir... but...but I've always wanted to."