Think you've seen every Gangnam Style video on YouTube? Think again.
Having clinched their spot for Serbia in the Hopman Cup final by winning their respective singles matches, Novak Djokovic and Ana Ivanovic were in full exhibition mode for their mixed doubles match against Tatiana Malek and Thanasi Kokkinakis, who stepped in for Tommy Haas when the German withdrew due to injury. Djokovic once again showed why he's earned that "Djoker" nickname, with spot-on imitations of his partner, trick shots and generally keeping the packed Perth Arena in stitches.
No one was safe, not even his teammate. During a changeover in the second set the arena blasted "Gangnam Style." Djokovic dragged a mortified Ivanovic on court and made her do the famous dance with him.