The tradition of dissing, also called dozens or 'playing the dozens', goes back to the earliest days of African-American culture, if not before. The very first written citation of an African-American song in English, published in 1830, is a song of this type: Round the Corn, Sally, in which the enslaved female singer is described as dissing every member of a picnic party in skillful rhyme.
Further comments bring it even farther back, then bring in the Inuit "song disputes." For some reason, this stuff just fills me with glee. Whatever odd faith I have in God, it's this stuff that reinforces it, not the formal church.