The Ketsu Drum meme, also known as the 'Ass Drum,' is a viral animation style that features a character being rhythmically slapped like a Taiko drum. Originating from Japanese video-sharing sites like Niconico Douga, the meme gained massive international popularity through remixes involving various anime characters and high-energy music. Its appeal lies in the perfect synchronization between the visual 'percussion' and the beat of the song, often used to express excitement, stress relief, or simply to create a catchy visual loop. Today, it remains a staple of the 'MAD' and rhythmic meme communities across YouTube and TikTok, frequently featuring characters from Blue Archive or The Idolmaster.