Psy said is blown away by how many lives he's touched this year and is in awe of his success.
When he created the video, he didn't even think his base fans would enjoy it.
"I can't compare it to anything else," he told to MTV News.
"In 2012, I experienced so many things; it's been a tremendous year, but to accomplish this, it's really something that stands out. Because it all began with YouTube, and to have [the video] reach one billion views... I don't think even I can break that record.
"Honestly, when I made this video I didn't even expect one million views, because this is off my sixth album in Korea, so I just hoped it would be huge there. I didn't even think about any other countries; I just did my job and waited and watched. And, you know, today, I'm still wondering and analysing its success. Because I've done this thing many times, this dance, this album, this video ... this one just became something else entirely."
- AP