The chant comes from Na Na Hey Hey Kiss Him Goodbye, a 1969 hit by the American band Steam, whose simple, repetitive chorus made it easy for crowd cheering to become a full singalong. Sports fans adopted it as a farewell taunt for a beaten opponent, especially when a game was already decided and the losing side was leaving the field. From stadiums it moved into broadcast clips, highlight reels and social media edits, where its instantly recognisable melody still signals a clear, playful victory and a humiliating exit for the other side.