A guy walks into a bar and says “Give me a shot of your finest Whiskey, and pour one for yourself on me!”
The bartender is surprised but pleased, so he pours two shots of the most expensive Scotch in the house.
They toast and drink up. After a few moments the man gets up and walks towards the door without paying. The bartender chases after him and says “hey what’s the big idea?! You haven’t paid the bill!” The guy says, “Sorry i haven’t got a cent on me.” So the bartender grabs him by the collar and tosses him out the door and says to not come back.
The next night the same guy walks in and the bartender is about to kick him out, but the guy says “Give me two shots of your finest whiskey. I’m really sorry about last night, let me make it up to you. Let’s have another couple shots and be friends again.”
The bartender is wary but figures no one would be crazy enough to pull the same stunt twice and gives the guy the benefit of the doubt. He pours and they drink up. But once again the guy gets up to leave without paying. The bartender chases after him again and says “Hey! You owe me for all those drinks!”
“Sorry I haven’t got a cent on me.”
So the bartender really roughs him up this time and sends him on his way with a black eye and a bloody lip.
The next night the same guy shows up again and says “Give me one shot of your finest Whiskey.”
“What you’re not buying me a drink too this time?”
“Oh no. You get violent when you drink!”