Frank Kogan

Google guesses your age, gender and interests based on the websites you visit while logged into a Google service. You can actually see what you're classified - and give them more information about yourself - at https://www.google.com/settings/ads/

I remember the last time I did this, I was a 13-17 yo boy with an interest in fiction and technology. Right now I seem to be an ageless, genderless being with an interest in East Asian Music, har har.

As far as 2NE1 having a lot of 13-17 yo boy fans, based on my personal experience I'm going to guess that those are actually boyish girls.

Meanwhile, another Kpop video with a lot of "middle-aged male" viewers is Sistar's Alone. Maybe it's the music, maybe it's the sexy dancing, or maybe it's Brave Brothers somehow artificially inflating the view count, as he is rumored to have done on almost all Sistar's releases but especially on Alone. Or maybe it's all three.