IVIV "Or I guess YOUR mother, because you'd be me.." p. 26

[Mark Kohut]

Yo mama insulting within 'playing the dozens"....see Wikipedia for more (although the articles could be better, thinks this white guy)

>From the African-American vernacular tradition, we know..

"that it is a modern survival of an English verb—"to dozen"—dating back at least to the fourteenth century and meaning "to stun, stupefy, daze" or "to make insensible, torpid, powerless." The object of the game is to stupefy and daze with swift and skillful speech.[citation needed]"

A...and Franz Ferdinand memorably plays the dozens in Chicago in AtD.