A crap ton is a slang term used to describe an amount or quantity that is extremely large, often in reference to weight. The word "ton" means a unit of measurement for mass, specifically equaling 20 hundredweight (1000 pounds) or one metric tonne (1000 kilograms). Adding the prefix "crap," which has no real meaning but is used as an intensifier, gives the phrase its sarcastic and humorous connotation.