Drunken Antics

Two guys are at a bar on the top floor of a tall building surrounded by other tall buildings.

The first guy says "You know, the wind currents are so strong with all these buildings around here that you can jump out the window and the wind will bring you back."
"No."
"Sure. I'll prove it"
The first guy jumps out the window and a few seconds later is back at the window and sits at the bar and says "See - it works".
The second guy says "I have to try that." He jumps out the window and plunges to his death.

The bartender looks at the first guy and says "Superman, you are one *mean* drunk".