The line comes from The Matrix, released in 1999, during Morpheus's first extended conversation with Neo about the nature of his reality. Morpheus compares Neo's unease to Alice in Lewis Carroll's Alice's Adventures in Wonderland, a reference that frames the film's central idea of waking up to a hidden world. The exchange has since been clipped and shared widely as a standalone sound, especially by fans quoting the film's philosophical dialogue. It endures because the Alice comparison instantly signals curiosity, confusion and a deeper truth waiting underneath.