Jumping off the Empire State Building

Two men are standing atop the Empire State Building.

One of them says, "If you jump off the building the wind will bring you right back!"

The other says, "Prove it!"

So the guy jumps off and comes right back. The other was amazed and so he runs, jumps off the building and falls to his death.

The other guy goes back inside to the bar and the bartender says, "Superman, you're a mean drunk!"