Barker (occupation)
A barker, often a carnival barker, is a person who attempts to attract patrons to entertainment events, such as a circus or funfair, by exhorting passing members of the public, announcing attractions of the show, and emphasizing variety, novelty, beauty, or some other enticing feature of the show. A barker would often conduct a brief free show, introducing performers and describing acts to be given at the feature performance.