Saudis shaking hands with the royal family

I have watched this video 30 times and still cannot figure out what's going on except that every time it has me laughing so hard I cry. Maybe the Saudis can export this concept to the US presidency: rather than shaking hundreds of hands at meet-and-greets, Obama could just have a cardboard cutout of himself at the entrance, with a White House intern behind the cutout do the handshaking. Although I guess it makes more sense in a country whose leaders are all geriatrics.