The Bar on the Tenth Floor
So, a bar was situated in the 10th floor of a building. Quite unusual, but it had a great view and lots of people came there to just chat and have a drink at evening.
One friday, a man walks in from the door and comes to the bartender. "A double whiskey with ice, please." The bartender obliges, gives the man his whiskey and goes back to polishing the glasses. The man takes the whiskey, drinks it down with one gulp, and then knocks the bar desk three times. The bartender turns to look at the man, and then continues with his business. The man then gets up, walks up to the window, opens it and jumps down.
After a little while, the very same man comes back, opens the door and walks to the bartender. "A double whiskey with ice, please." The bartender rolls his eyes and gives the man his whiskey, which he, once again, drank in one gulp. He then knocks the bar desk three times, gets up and jumps out of the window again.
Lo and behold, the same man walks in from the door again, to the bartender when another man runs to him with wide eyes. "Dude! What the hell? How do you just jump down from the tenth floor of the building and come back unscathed?!" The man from earlier had ordered another whiskey and just stared it a little before turning back to the other guy. "Well, I'll tell you a secret: If you order a double whiskey with ice, drink it with one gulp, and knock the bar desk three times, you can do ANYTHING." The other man gasps in surprise and then turns to the bartender excitedly. "One double whiskey with ice, please! I gotta try this!" The bartender pours the man his whiskey, which he proceeds to drink in one gulp. He then knocks the bar desk three times, makes a bolt to the window and leaps down.
After a while, the man from earlier still sat by the desk, sipping his whiskey in peace. The bartender then leans closer to him and whispers, "You're a real jerk when you're drunk, Superman."