Who said it was a joke? It's just a funny video.  There is no story behind it, no tale. It is what it is. I thought it was funny. And a few others thought it was funny as well. I've completed my goal and i'm happy that the people that saw it got a decent chuckle. 

Oh and, yes, he was being sarcastic. Sarcasm isn't just saying the opposite of what someone says in a gloomy condescending tone.