Big John is a'comin' to town

A very small, sickly-looking man was hired as a bartender. The saloon owner gave him a word of warning: "Drop everything and run for your life if ever you hear that Big John is on his way to town." The man worked several months without any problems. Then one day a cowhand rushed in shouting, "Big John is a'comin'," and knocked the small bartender on the floor in his hurry to get out.
Before the bartender had a chance to recover, a giant of a man with a black bushy beard rode into the saloon through the swinging doors on the back of a buffalo, and using a rattlesnake for a whip. The man tore the doors off their hinges, knocked over tables, and flung the snake into the corner. He then took his massive fist and split the bar in half as he asked for a drink.
The bartender nervously pushed a bottle at the man. He bit off the top of the bottle with his teeth and downed the contents in one gulp, and turned to leave. Seeing that he wasn't hurting anyone, the bartender asked the man if he would like another drink. "I ain't got no time," the man roared. "Big John is a'comin' to town."

(Brother Dave Gardner) ;)