At its simplest, the dozens is a comic concatenation of "yo' mama" jokes. At its most complex, it is a form of social interaction that reaches back to African ceremonial rituals. Whether considered vernacular poetry, verbal dueling, a test of street cool, or just a mess of dirty insults, the dozens has been a basic building block of African-American culture. A game which could inspire raucous laughter or escalate to violence, it provided a wellspring of rhymes, attitude, and raw humor that has influenced pop musicians from Jelly Roll Morton to Ice Cube.