Dirty rap, also known as booty rap, porn rap, Porn Core or sex rap, is a sub-genre of hip hop music that contains lyrical content revolving mainly around sex and sexual subjects. The lyrics are overtly sexually explicit and graphic, often to the point of extreme offensiveness. Musically, dirty rap often contains a distinctly bass-driven sound, as the sub-genre actually arose from the popular Miami Bass
rap scene. Most of porn rap songs have been used as soundtracks to pornographic movies in the 2000s, replacing the traditional porn groove.
Some practitioners of the Jamaican and Caribbean version, who blend rap with reggae, have been refused entry to the UK on public order grounds. This is because of the way their music reflects the violently homophobic nature of Jamaican society and advocates not only prejudice and discrimination against gays, but violence towards them up to and including murder.