Kool Keith explained the lyrical material of his 1997 album Sex Style as "pornocore". Kool Keith later on appeared on the 2001 album Porn Again, a dirty rap or pornocore principle album by The Smut Peddlers. Dirty rap (also identified as porno rap, porn rap, intercourse rap, booty rap, or pornocore) is a subgenre of hip hop tunes that is made up of lyrical content material revolving generally around sexually express subjects.