A drunk walks into a bar and says, "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 the bill.

The drunk says, "I haven't got it."

The bartender slaps the guy around a few times then throws
him out into the street.

The very next day, the same drunk walks into the bar and
once again says, "Bartender, buy everyone in the house a
drink, pour yourself one, and give me the bill."

The bartender figures that he can't possibly be stupid enough
to pull the same trick twice, so he gives him the benefit of
the doubt. He pours a round of drinks for the house, has a
drink himself, and hands the drunk the bill.

Again, the drunk says, "I haven't got it."

The bartender can't believe it. He picks the guy up, beats
the living daylights out of him, then throws him out into
the street.

The next day, the same drunk walks back into the same bar
and says, "Bartender, buy every one in the house a drink and
give me the bill."

In disgust, the bartender says, "What, no drink for me this
time?"

The drunk says, "Hell no! You get too violent when you drink."