What is mulligan?

Mulligan is a term commonly used in golf to describe a second chance shot that is allowed if the first shot is not satisfactory. It is not an official rule in golf but is often practiced among friendly games. The term "mulligan" originated from a Canadian golfer named David Mulligan who allegedly introduced the practice in the 1920s. However, the term itself was first used in the 1940s by another golfer who popularized the concept. Mulligans are not allowed in official golf tournaments and are considered a breach of etiquette. However, they are commonly used in casual games among friends or colleagues.