[long] A man walks into a bar on the 30th floor....

A second man already sits at the bar drinking alone and looking a little lonely so the he goes to sit by him and orders a drink. The second man looks over at him, smiles, and says:
"You know, this bar is in just the right place that if you jump out that open window you'll pop right back up into it without ever hitting the ground."
The first man looks over in annoyance, thinking the man is screwing with him, "Bullshit that's scientifically impossible."
"No, seriously, it's true!" Argues the second man. "Watch I'll prove it to you!" and without waiting for a response the man walks over to the window and jumps.
Thinking he had just killed himself the first man runs to the window only to see the second man pop back in before he can even reach it. Staring in total surprise, the man can't believe what he'd just seen. "No way, do it again.!"
The second man jumps back out the window and the first man walks to it and watches as he stops just before hitting the ground, and like being pushed be a rush of air, flies back up and into the window.
"That looks amazing! I have to try it!" The second man moves over and the first jumps out the window. He feels amazing as he's free falling, completely sure he's going to pop back up before the fatal landing. Then he splatters everywhere when he hits the ground.
The bartender looks over at the second man chuckling to himself as he walks back to the bar, "You know Superman, you're a real prick when you're drunk."