A guy walks into a bar, sits down and orders a beer. The guy next to him seems entransed in some sort of mathematical equation. He seems to be getting all worked up about it and so the first guy asks, what ya workin on?



The 2nd guy looks up with big eyes and says, Im calculating wind factors, and by my figures a person should be able to jump off a building and the wind should make him float right back to the top. Comon, Ill show ya! He says. So they proceed up to the top of the 30 story building next door and he says, well, here goes! And jumps!



Sure enough, he appears to be blown right back to the rooftop and floats back to where he jumped from.



Well! says the man, I must say that is really amazing, but Im not sure I want to try it yet, lets see it again then maybe Ill go. So he says, OK! and with a leap he bails off the rooftop and again floats right back.



Wow! He says, OK Ill give 'er a go! Stepping up to the edge he leaps off the building, falls to the ground and goes SPLAT! onto the street below.



The other guy works his way down the elevator, back into the bar and takes a drink with a sheepish grin.



The bartender shaking his head comes over and says, "you know, you can be a real asshole when your drunk superman".