The line comes from The Weakest Link, the British quiz show that first aired on the BBC in 2000 and was hosted by Anne Robinson. Contestants voted each other off after each round, and the lowest performer was sent home with this catchphrase, usually followed by a blunt goodbye. The format was sold around the world, spreading the phrase far beyond the original series. Online it survived as a shorthand dismissal, reused in edits, memes and reaction videos whenever someone is dramatically singled out as the failure of the group.