A woman goes to a new bar at the top of a skyscraper and over by the counter she sees an attractive man. She keeps her eye on him as she orders a drink, and she sees the man take a shot and jump out the window. She's so shocked she can't speak, but moments later he walks back into the bar. He goes back to the counter, orders another shot, takes it and jumps out the window. Sure enough moments later he walks back into the bar again, completely unharmed. She walks over to him and says, "I've been watching you, and I've got to ask what is going on. We're thirty stories up!" He leans over and passes her a shot, "If you take a shot of this, you can fly." So she takes the shot, jumps out the window, and plummets to her death. The bartender looks over and says "Superman, you're a real asshole when you drink."