what the fuck is a kilometre

A kilometer is a unit of length in the metric system, equal to 1,000 meters or approximately 0.621 miles. It is used in many countries around the world for measuring distances. The term "What the fuck is a kilometer" has been popularized as a satirical and aggressively ignorant catchphrase in American culture, often used to mock the metric system and express a preference for the imperial system of measurement.