Ribaldry or blue comedy is humorous entertainment that ranges from bordering on indelicacy to indecency. Blue comedy is also referred to as "bawdiness" or being "bawdy". Like any humour, ribaldry may be read as conventional or subversive. Ribaldry typically depends on a shared background of sexual conventions and values, and its comedy generally depends on seeing those conventions broken.

Comedy is a genre of fiction that consists of discourses or works intended to be humorous or amusing by inducing laughter, especially in theatre, film, stand-up comedy, television, radio, books, or any other entertainment medium. The term originated in ancient Greece: In Athenian democracy, the public opinion of voters was influenced by political satire performed by comic poets in theaters. The theatrical genre of Greek comedy can be described as a dramatic performance pitting two groups, ages, genders, or societies against each other in an amusing agon or conflict. Northrop Frye depicted these two opposing sides as a "Society of Youth" and a "Society of the Old". A revised view characterizes the essential agon of comedy as a struggle between a relatively powerless youth and the societal conventions posing obstacles to his hopes. In this struggle, the youth then becomes constrained by his lack of social authority, and is left with little choice but to resort to ruses which engender dramatic irony, which provokes laughter.