The first one said to the other two,

"You know, it's a funny thing about these wind currents. A person could jump off this building right now and not even hit the ground. The wind would carry them right back up to the top of the building."

The second drunk said,

"You're crazy!"

Then the first drunk said,

"I'm serious! Watch!"

So, the first drunk jumped off the building, and the wind carried him right back up to the top!

The second drunk said,

"Wow. Let me try!"

So the second drunk leapt off the building and promptly fell to his death to the street below, landing with a hideous SPLAT!

The first drunk smiled, clearly amused.

The third drunk looked at him and said,

"You know, Superman, you can be really nasty when you're drunk".