If it is a hoax it is a good one, that is the right tailgate for that truck it still has the window gasket on it, the hitch is bolted to the tailgate. I don't know I have see some pretty stupid stuff in my day, but I wouldn't count this out.
Just this weekend saw a truck driving down the highway with a load of firewood, would have taken a picture but didn't have the camera with me, the front wheels were literally bouncing off the ground as he hit bumps in the road.
And when we drove past him he was chatting on the phone and the music was so loud I could here it over the road noise and my diesel.