"What Up, What's Haapnin'" is a song by American rapper T.I., released on September 2, 2008, as the fifth single from his sixth studio album Paper Trail (2008). The song, which was produced by high-profile American record producer Drumma Boy, is a diss track directed towards fellow Atlanta-based rapper Shawty Lo, in response to his multiple accusations that T.I. is not from his hometown of Bankhead. The song peaked at 84 on the Billboard Hot 100 and at number 97 on the Hot R&B/Hip-Hop Songs chart, when it first leaked online. The video had made its way to iTunes, BET's 106 & Park, and MTV.