A drunk walks into a bar and says to the bartender (with a drunken slur),
"Bartender, buy everyone in the house a drink, pour yourself one, and give me the bill."
So, the bartender does just that and hands the man a bill for $37.00. The
drunk says, "I haven't got it."
The bartender slaps the guy around a few times then threw him out into the street.

The very next day the same drunk walks into the bar and once again says (with a drunken slur),
"Bartender, buy everyone in the house a drink, pour yourself one, and give me the bill."
The bartender looks at the guy and figures to himself that he can't possibly be stupid enough to pull the same trick twice, so he gives him the benefit of the doubt, pours a round of drinks for the house, has a drink himself and hands the drunk a bill for $37.00.
The drunk says, "I haven't got it".
The bartender can't believe it, so he picks the guy up, beats the living day lights out of him, then thows him out into the street.

The next day the same drunk walks back into the same bar and says (with a drunken slur),
"Bartender, buy every one in the house a drink, give me the bill."
In disgust the bartender says, "what, no drink for me this time?"
The drunk replies, "No, you get violent when you drink."