From Wikipedia:

“The music video of "Gangnam Style" has been met with positive responses from the music industry and commentators, who drew attention to its tone and dance moves, though some found them vulgar.[57] Another notable aspect that helped popularise the video was its comical dance moves that can be easily copied, such as the pelvic thrust during the elevator scene.[58] The United Nations hailed Psyas an "international sensation" because of the popularity of his "satirical" video clip and its "horse-riding-like dance moves."[59] As such, the music video has spawned a dance craze unseen since the Macarena of the mid-1990s.[60][61]“