A drunk walks in the front door

A drunk walks in the front door of a bar and yells “Bartender, gimme a drink!”

The bartender says “Sir, you’re already intoxicated. I can’t serve you.”

The drunk grumbles and walks out the front door.

A few minutes later, he comes in the side door yelling “Bartender, gimme a drink!”

The bartender says “I already told you…you’re drunk and I can’t serve you!”

The drunk grumbles and walks out the side door.

A few minutes later he comes in the back door yelling “Bartender, gimme a drink!”

The bartender says “Look, buddy, I told you twice, you’re too drunk and if you don’t leave now I’m calling the law!”

The drunk looks at him, awestruck. Finally, he asks “Just how many bars do you work in, anyway?”