Superman

Tom and Clark were standing on the roof of their building drinking a few beers on their break and Clark said, "Hey Tom, did you know that if you jump off this building, after you get down so far, a draft will pull you back inside the building on the third floor?"

"Get outta here," said Clark.

"No I'm serious, watch me."

Clark hopped off the building and sure enough, he was taken in by the draft at the third floor window. He took the elevator back to the top and Tom and a security guard that arrived were standing there, Tom in awe.

"I can't believe it." Said Tom.

"I know you should try it Tom."

So Tom hopped off and plunged into the ground.

"Superman you're an asshole when you're drunk." said the security guard.