A sub-genre of music stemming from rap music. What defines this genre is the lyrics. Rap was all about struggling in the ghetto and slums and being oppressed by the man and being an "MC", being able to spit a rap at anytime, things like that. Post-Rap is what we hear today (2011), its lyrics are about pussy, and money and sex, things of that nature, and no one is an MC in Post-Rap.
Rap (80s-90s): Tapac, The Notorious B.I.G., MC Shan, Ice Cube, Eminem, Jay-Z
Post-Rap (00s - present): Lil` Wayne, Busta Rhymes, Wiz Khalifa, Kanye West