Rudeness (also called impudence or effrontery) is a display of disrespect by not complying with the social "laws" or etiquette of a group or culture. These laws have been established as the essential boundaries of normally accepted behavior. To be unable or unwilling to align one's behavior with these laws known to the general population of what is socially acceptable is to be rude.

Rudeness "constituted by deviation from whatever counts as politic in a given social context, is inherently confrontational and disruptive to social equilibrium" (Kasper, 1990, p. 208). Rudeness, particularly with respect to speech, is necessarily confrontational at its core.

Similar terms include: impoliteness, making a faux pas, insensitivity, offensiveness, obscenity, profanity, violating taboos, and deviancy. In some cases, criminal behavior can also be an act of rudeness.

Both manners and morality deal with whether a thing is morally good or bad, but at different levels. Unlike morality, which, for example, condemns murder as a violation of the human person, manners primarily concerns itself with violations of human dignity, rather than the person's health or property (Martin, 1996, p. 123). Rude behavior is a violation of human dignity or of the respect due to others.

Justin Drew Bieber ( /ˈbiːbər/ BEE-bər, born March 1, 1994) is a Canadian Pop/R&B singer-songwriter, musician, and actor. Bieber was discovered in 2008 by Scooter Braun, who came across Bieber's videos on YouTube and later became his manager. Braun arranged for him to meet with Usher in Atlanta, Georgia, and Bieber was soon signed to Raymond Braun Media Group (RBMG), a joint venture between Braun and Usher, and then to a recording contract with Island Records offered by L.A. Reid. Bieber's debut single, "One Time", was released in 2009 and peaked in the top twenty in Canada and charted in the top thirty in several international markets. His debut album, the seven-track EP My World, followed in November 2009, and was soon certified platinum in the United States. He became the first artist to have seven songs from a debut album chart on the Billboard Hot 100.

Alexander Minto Hughes (2 May 1945 - 13 March 1998), better known as Judge Dread, was an English reggae and ska musician. He was the first white recording artist to have a reggae hit in Jamaica, and the BBC has banned more of his songs than any other recording artist due to his frequent use of sexual innuendo and double entendres.

Hughes was introduced to Jamaican music when he lodged as a teenager in a West Indian household in Brixton, South West London. He met Jamaican artists Derrick Morgan and Prince Buster through his job as a bouncer at London nightclubs such as the Ram Jam in Brixton, and through another job as a bodyguard. After a brief spell as a professional wrestler (performing under the name "The Masked Executioner"), and as a debt collector for Trojan Records, he worked as a DJ on local radio and ran his own sound system.

When Prince Buster had a big underground hit in 1969 with "Big 5", Hughes capitalized on it with the recording of his own "Big Six", based on Verne & Son's "Little Boy Blue", which was picked up by Trojan boss Lee Gopthal, and released on Trojan's 'Big Shot' record label under the stage name Judge Dread, the name taken from another of Prince Buster's songs. "Big Six" reached #11 in the UK Singles Chart in 1972, selling over 300,000 copies and spending six months on the chart, despite getting no radio airplay due to its lyrics. Further hit singles followed with "Big Seven" (co-written by Rupie Edwards) and "Big Eight" — both following the pattern of lewd versions of nursery rhymes over a reggae backing — as well as "Y Viva Suspenders" and "Up With The Cock".