The 'Thanos Back to Me' meme stems from the 2019 film Avengers: Endgame. In this scene, the 2014 version of Thanos sits patiently in the wreckage of the Avengers headquarters, waiting for Iron Man, Captain America, and Thor to confront him. He delivers the chilling line: 'You could not live with your own failure. Where did that bring you? Back to me.' The meme went viral as a way to mock people or entities who try to move on or find a new solution, only to fail and inevitably return to their original starting point or a previous authority figure.