Man makes a crazy bet with the bartender, but the result is completely unexpected

A man sits down at a bar and tells the bartender, "I bet you three hundred dollars that I can piss into the cup all the way over there on the other side of the bar and not miss a single drop." 

"There is no way you can do that," the bartender replies. "Sure, I'll bet you three hundred dollars." 

The man then begins to undo his pants and begins peeing. He pees all over the bar, spraying on the bottles and the bartender, not making a single drop in the cup. 

The bartender, laughing, says, "That's it, you owe me three hundred dollars." 

The man then gets up, walks over to the pool table and shakes hands with the men standing there. He walks back to bar, sits down and hands the bartender his money, laughing. 

"Why are you laughing?" the bartender asks. "You just lost the bet." 

The man says, "I'm laughing because I bet those guys over there one thousand dollars that I could piss all over you and your bar and you would still be laughing when I was done."