These two guys were trying to reach for something in the roof.

At first, they were being recorded by their friend reaching for something on the roof. One of them is carrying the one climbing on the roof of a gazebo and reaching for something. Suddenly the towel of the one carrying the guy slipped and to his panic because, he forgot that he was carrying his friend. His friend fell and slipped on the wooden floor of the gazebo with a loud crash until finally dropping on the lake near the gazebo. He looks fine in the end of the video but it surely was not entirely painless with the loud crash that was heard. This video was shared for more than a thousand times and was also viewed for more than 23,500 times already on Facebook.

Source:http://www.jamesbangfiles.com/2014/11/these-two-guys-were-trying-to-reach-for.html