"Milly Rock" is a popular dance move that originated in the hip-hop community. It was created by rapper 2 Milly and gained widespread attention through social media platforms like Instagram and TikTok. The dance features a series of fluid arm and body movements, often performed to upbeat rap music. The dance became a viral sensation, inspiring many to share their own versions online. It is often associated with the broader dance challenge trend, where users replicate specific moves and add their personal flair. "Milly Rock" has also influenced various music videos and live performances in the hip-hop genre.