The line comes from Lost, the ABC drama that ran from 2004 to 2010, and is spoken by Jack Shephard, played by Matthew Fox, in the season three finale in 2007. In the scene, a dishevelled Jack begs Kate to return to the island, revealing that the flashbacks viewers had followed were actually flash-forwards. The desperate delivery made the moment instantly quotable, and it spread through reaction videos, edits and memes as shorthand for any reluctant return. It remains popular because the phrase fits time travel, sequels, revisits and second attempts perfectly.