Well the song is actually poking fun at a Beverly Hills style area in Korea called Gangnam. As he said dress fancy dance cheesy in one of the interviews.
The facts are, he is 35 married with twins. He was brought up in this Gangnam district, which means he is from a well off family. I heard his family owns an electronic company, share price has gone up significantly since he made it big. He studied in the US of A before. He has been singing for quite some time. The original intent of the youtube video as he said, was meant for the Korean populace only.
lol...i need a life...