Here's The Joke

In the middle of a huge metropolitan city was a skyscraper where at the top was a bar. At the end of a particularly hard day at work Jim went up to the bar to let go the stresses of that day. When he got there, there was already a man sitting at the bar drinking a particularly vile looking drink. This strange man said "watch this" and proceeded to walk over to one of the large windows lining the wall. He then picked up a chair and smashed out the window and stepped out.

He started falling toward the ground turning end over end and right before he hit the ground he stopped and proceeded to drift up. He floated back up through the window and went back over to the bar.

Jim looked at the bartender and said "I'll have what he's having!"

After a few rounds of the drink, Jim stumbled over to the window and fell out. He fell all the way to the ground and landed with a loud SMACK.

The bartender turns to the mysterious man and says "Superman, you're such a jerk when you're drunk!"