hamster
Explanation
The Joke
A man at his office desk laments to a coworker: "You ever just feel like a hamster on a wheel in this office? Performing the same behavior over and over, the ground wearing warmer and weather with each passing day?" His coworker responds with what initially sounds like reassurance: "Well, you're gonna snap out of it one of these days, man." But then the coworker adds: "Days, nights, and weekends" -- revealing that the supposed encouragement is actually a confirmation that the monotonous cycle extends to every moment of his life, not just work hours.
The comic takes the familiar "hamster wheel" metaphor for the drudgery of office work and makes it worse. The coworker's initial response seems supportive, but the punchline reveals that "snapping out of it" is not about escaping the cycle but about recognizing that the cycle encompasses all of existence, not merely the workday.
The Humor
The humor comes from the bait-and-switch of the coworker's response. The audience expects a pep talk or words of encouragement, but instead gets the grim revelation that the hamster wheel is not limited to 9-to-5 -- it runs all day, every day. The phrase "days, nights, and weekends" is delivered so casually that it makes the existential horror even funnier. It is a joke about how modern life's repetitive grind does not actually stop when you leave the office; the whole thing is one continuous wheel.