A short animated video typically set to audible music. These videos are then recreated by other animators with their own characters or characters from media franchises. These videos tend to be simple and repetitive, often focusing on dancing.
The format evolved on YouTube in the late 2000s when Japanese MAD trends such as Caramelldansen and Caipirinha were imported to the site from NicoNico, with the first true animation meme being the Nya Nya Dance, posted by webkinzlid in 2009.
This tag should only be used on posts that explicitly call themselves such or are based on videos that were designed to be replicated, not parodies in general.