1.A pursuit, native to Southside black youths, the prime practioners thereof, in which each attempts to outwit the other by deriding him with a greater and more prodigious succession of epithehs
2."oneupmanship"
3.Metaphorically-any two(or more) individauls who publicly exchange epitheths or have a public(esp.ongoing) altercation(particularly as a juxtapasisiton descrbing those who have probably never in their lives been on the South Side)
1.The two friends played the dozens.
2.Politician X played the dozens with Politican Y.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.