Fight Club is a 1999 film directed by David Fincher, based on Chuck Palahniuk's novel, and this line comes from its opening narration by the unnamed narrator played by Edward Norton. The character describes six months of insomnia, a detail that establishes his detached, exhausted state before the story unfolds. The clip has circulated online as a short voice excerpt for edits about sleeplessness, overwork and mental fatigue. It remains in use because the line is instantly recognisable to film fans and needs no context to convey a long, restless night.