FIST OFF!! I might not tell this joke correctly.

A guy is in a tall building at a bar in New York City. He walks up to another guy and says "Hey, did you know that up in these buildings, the wind goes upwards?" The other guy says" No, I didn't know that. Are you sure?" And the first guy goes "yeah, watch!" And so he jumps put the window, falls down a few feet, and comes back up into the bar. The second guy says "Hey that's cool! I wanna try!" So he leaps out the window, The first guy and the bartender are waiting and then SPLAT!!! The first guy hits the ground, and dies. The bartender says to the first guy, "Superman, your really an asshole when you're drunk."