"You Know What It Is" is a song by American hip hop recording artist T.I., released July 10, 2007, as the second single from his fifth studio album T.I. vs. T.I.P. (2007). The song is featured on the "T.I.P." section of the album, which is T.I.'s more gangsta and ghetto alter ego. The song was produced by Jerry "Wonda" Duplessis and Wyclef Jean, the latter of whom contributes vocals throughout the track. It debuted at #73 on Billboard's R&B/Hip Hop Songs on June 28, 2007, later peaking at #11.