FALLING DOWN,HOW TALLCAN IT BE?

A man is fibbing away about how great things are in his country. Finally, he starts describing the tall buildings in his country.
"There is a building so tall, it took my friend Alex 72 hours to fall off it!"
"Oh, my God!" says his friend. "Surely he must have died!"
"Of course. He was without food or water for 3 days!"