A man walks into a bar and orders a drink. As he's sitting there, he notices a giant jar filled with hundred dollar bills sitting on the counter. Curious, he asks the bartender about it.
The bartender explains, "We have a challenge here at the bar. If you can complete the three tasks we have set out, you get to take home all the money in the jar."
Intrigued, the man asks what the tasks are. The bartender points to a large bouncer standing by the door, "First, you have to knock out our toughest bouncer in just one punch. Then, you have to go out back and pull this rotten tooth from our meanest dog. And finally, you have to make love to our oldest and crankiest customer in the back room."
The man laughs and says, "I'll give it a shot!" He finishes his drink and walks over to the bouncer. With one swift punch, the bouncer goes down like a ton of bricks. The man heads outside to the back alley, where he hears growling and snarling. He returns a few minutes later, bloodied and bruised, and announces he has successfully pulled the tooth from the dog.
Finally, the man heads to the back room to complete the last task. After a few minutes of muffled noises and shouting, he emerges, disheveled and exhausted. The bartender looks at him in amazement and asks, "Wow, you really did it! You completed all three tasks! You get to take home all the money in the jar!"
The man smiles weakly and says, "Thanks, but to be honest, I don't even want the money anymore. I just want to know who the hell set those three tasks for me!"