off-color

The term off-color humor (also known as dirty jokes or blue humor) is an Americanism used to describe various jokes, prose, poems, black comedy and skits that deal with topics that are considered to be in poor taste or overly vulgar by the prevailing morals in a culture. Most commonly labelled as "off-color" are acts concerned with sex, a particular ethnic group, or gender. Other off-color topics include: violence, particularly domestic abuse; excessive swearing; "toilet humor"; national superiority or inferiority, dead baby jokes, pedophilic content, and any other topics generally considered impolite or indecent. Generally, the point of off-color humor is to induce laughter by evoking a feeling of shock and surprise in the comedian's audience. In this way, "blue" humor is related to other forms of postmodern humor, such as the anti-joke.
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Adjective
1. in violation of good taste even verging on the indecent; "an indelicate remark"; "an off-color joke"
(synonym) indelicate, off-colour
(similar) tasteless, in poor taste(p)
2. humorously vulgar; "bawdy songs"; "off-color jokes"; "ribald language"
(synonym) bawdy, ribald
(similar) dirty

in bad taste, rude, dirty He told an off-color joke at the party that made his wife very angry.