A drunk walks into a bar and says to the bartender, "Bartender, drinks for everyone in the house, on me, and pour yourself one, too!" The bartender pours everyone in the house a drink, pours himself a shot and knocks it back, and says, "That'll be $37, please." The drunk says, "I haven't got a penny." The bartender says, "Why, you...!" comes from behind the bar, throttles the drunk, and throws him out on the street.
The next night, the drunk again walks into the bar and says, "Bartender, drinks for everyone in the house, on me, and pour yourself one, too!" The bartender thinks, "He wouldn't try that twice," pours everyone in the house a drink, pours himself a shot, knocks it back, and says, "That'll be $37, please." The drunk again says, "I haven't got a penny." Again the bartender comes from behind the bar, beats up the drunk, and throws him out on the street.
The next night the drunk walks into the bar and says, "Bartender, drinks for everyone in the house, on me." The bartender says, "Aren't you going to offer me a drink, too?" and the drunk answers, "No, you get violent when you drink."