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South Korean rapper Psy, right, teaches UN leader Ban Ki-moon some of his famous dance routines

UN leader Ban Ki-moon met fellow South Korean Psy in New York. Ban said he felt overshadowed by his countryman, who showed off some of the wacky dance moves that have been viewed more than 530 million times on YouTube

UN Secretary-General Ban Ki-Moon tries 'Gangnam' dance

United Nations' Ban Ki-Moon, one of the world's most powerful leaders, tries the 'Gangnam Style' dance popularized by Psy.

Ban Ki-Moon and Psy are both South Koreans.