Actually there are a couple of give aways if you look closely enough when his camera guy shoots the wrong angle. The audience reaction is definitely faked though, because the camera angles aren't enough to make you believe what's happening. Pay attention to the half dude on the bench; looks awfully two dimensional.
Talking about sex change, there was a video on Facebook at 6AM today claiming that Mrs. Obama is a transsexual. They analyzed her entire body with charts, starting with the hands. It was vastly amusing & would have been a great bit on any comedy show. The producer did not realize how many women actually have the physical features they deemed masculine. This video was removed very quickly.