Mmmkay is the signature catchphrase of Mr. Mackey, the school counselor in South Park, the long-running animated series created by Trey Parker and Matt Stone that first aired in 1997. Mackey ends many of his well-meaning but clueless lectures with the drawn-out word, and fans quickly adopted it as shorthand for patronizing agreement. Clips of the line spread through early soundboards, reaction videos and meme edits, where its instantly recognisable tone did the work without any context. It remains popular because it fits almost any moment of fake understanding or weary authority.