The line comes from The Matrix, released in 1999, during the sequence where Cypher betrays the crew of the Nebuchadnezzar and unplugs them while they are defenceless inside the simulation. Switch, played by Belinda McClory, whispers it as she realises what is happening to her. The short exchange later circulated as a reaction clip online, detached from the full scene. Its meaning stayed clear even without context, so editors kept reusing it for betrayal and disappointment, and the understated delivery helped it survive long after louder movie quotes faded.