The coffee mug has been sitting on the table since yesterday. The laundry chair has quietly become a laundry mountain. There are shoes near the door, unopened packages on the counter and probably something questionable in the refrigerator. None of it seemed urgent, until the message arrives: “We’re coming over tomorrow.” Suddenly, an adult who comfortably ignored the clutter all week is vacuuming under the sofa and wondering whether the bathroom mirror has always looked that dirty. Psychology suggests this reaction can involve more than cleanliness. Impression management, self-presentation, social evaluation and environmental psychology can help explain why a parent's visit can transform an acceptable home into a problem that needs fixing immediately.