This is a gif of a man removing his sweatpants while doing a flip on a trampoline. I believe this is an Olympic event, but I am not positive.
John, this is homoerotic heartthrob Tom Daley. He says this is one of his party tricks. Nonetheless, I am now training to be able to replicate this maneuver and demand that I be allowed to attempt it at VidCon 2013.