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On the March 15th airing of KBS2 variety '1 vs. 100', Park Ji Woo revealed, "One day around 1:30 AM, I got a call, ran over, and once he played the music, I just danced to something off the top of my head. [Psy] said, 'This is it,' and told me to come back to film by 2:00 PM the next day. And really the next day, I showed up and filmed for the MV for about 7 hours." 

The MC then asked if the dancer had received at least decent pay for his appearance in the MV to which Park Ji Woo replied, "He asked if he could just buy me drinks 20 times. I don't really drink, so I asked him to perform for my next world dance competition. I got him to promise, but when I last called him, he didn't answer me." 

Well, hopefully Psy will get in touch with the pro-dancer soon!