A man walks into a 20 story bar. He sees another man- clearly drunk, mutter something to the bartender and suddenly this man turns around, sprints full speed at the window and smashes through it, falling to the bottom. The man brushes it off and walks to the bartender and orders the strongest drink they carry. Many drinks later he sees the door open. It's the man that jumped out the window 10 minutes ago. He asks him ""How did you survive that fall? it's 20 stories!"" The man says ""It's easy, just charge at the window, jump out and when you are almost on the ground say ""fly!"" and you'll gently glide to the ground."" The other man decides to try it out. He jumps through the window, and THWACK. He hits the street below. The bartender says ""God damnit superman, I hate it when you're drunk.""