A special bar

A man goes into a bar at the top of the Empire State Building in New York. It looks like a nice place so he takes a seat at the bar next to another guy. "This is a nice place, I've never been here," the first guy says.
"Oh really?" the other replies, "it's also a very special bar."
"Why is that?" the first guy asks.
"Well see that painting on the far wall?That's an origional Van Gogh, and this stool I'm sitting on was from the Titanic."
"Gee, that's amazing" the first guy says.
"Not only that, but you see that window over there, fourth from the right? Well, the wind does strange things outside that window. If you jump out, you'll fall about 50 feet before the wind catches you and you're pushed back up."
"No way, that's impossible," the first guy replies.
"Not at all, take a look," the other man replies and walks over to the window, followed closely by the first man. He opens the window, climbs over the sill and falls out. He drops 10...20...30...40...50 feet, comes to a stop, and whoosh! He comes right back up and sails back through the window. "See, it's fun. You should try it," he says.
"Try it? I don't even believe I saw it!" exclaims the first man.
"It's easy. Watch, I'll do it again." And with that, he falls out the window again. He drops 10...20...30...40...50 feet, comes to a stop, and
whoosh! He comes right back up and sails through the window again. "Go ahead, give it a try, it's a blast," he says.
"What the heck. OK, I'll give it a try," the first man says, and proceeds to fall out the window. He falls 10..20...30..50..100...200...300..500...1000 feet and SPLAT!... ends up as road pizza on the sidewalk below.
After calmly watching the man fall to his death, the other guy casually closes the window and heads back to the bar and orders another drink.
The bartender arrives with the drink and says, "You know, Superman, you're a real jerk when you're drunk!"