Stag Mates are a group of friends who have been together for a long time. The term is derived from the male deer, or stag, which is known for its loyalty and strong bond with its herd. Stag Mates are usually close friends who have been through thick and thin together, and they often refer to each other as family. The term 'DOES' is used to refer to female deer, and thus the term 'Stag Mates' is used to describe a group of friends who have been together for a long time, regardless of gender.