Swine's Supper is a term used to describe a meal of SLOP, which is a type of food made from leftovers or scraps. It is usually given to pigs, but can also be given to other animals such as chickens. SLOP is a mixture of grains, vegetables, and other ingredients that are boiled together and then served as a soup or stew. Swine's Supper is an economical way to feed animals, as it uses up leftover food that would otherwise go to waste.