Three guys are standing on top of the Empire State Building -- a jew, a black guy, and a white guy.
The white guy turns to the jewish guy and says " You know lately the winds have been so strong up here that you can jump off and it will just carry you right back up".
The jew says "Man you are nuts, if you think that is true then let's see you try it". The white guy smiles and jumps off the building and sure enough, the wind carries him right back up to the top and he lands on his feet.
The Jew says "Shit! That's amazing, I am going next!" So he jumps off the side and falls to his death.
The black guy turns to the white guy and says "Superman, you can really be an asshole sometimes".