I'm not that good looking. That's why 'Gangnam Style' works. If someone handsome uses that phrase it's just awkward. But if someone like me uses it, it's funny.
PSYGangnam is a territory in Seoul, Korea. I describe it as noble at the daytime and going crazy at the night time. I compare ladies to the territory. So - noble at the daytime, going crazy at the night time - and the lyric says I am the right guy for the lady who is like that.
PSY