Something that has the appearance of something regular or ordinary, but robotic in action, having to do what it is programmed to do, not allowed free thought or action.
Also title of famous book and movie having much to do with this topic.
A response to a deeply confusing or dumb comment. Physicians often ask patients to draw an analog clock on a piece of paper to screen for dementia, Alzheimer's disease, and encephalitis. If the patient's clock picture looks disfigured or incorrect, it is a strong indicator of mental decline. Hannibal Lecter famously asked detective Will Graham to draw a clock to diagnose Will's case of encephalitis in the first season of Hannibal.
Derived from the terms "fuck yo couch nigga" and less popular "suck yo cock." "Fuck yo clock" takes the terms to the next level, as coitus with a man's timepiece is one of the most heinous offenses.