In Track 1, there is a brief instance of backmasking when the "opening act" is introduced. When played in reverse, the announcer can be heard saying, "Mr. Reginald Warrington. Give it up for Reginald Warrington!" This was the name of Dave Chappelle's stand-up comedian character in the film, The Nutty Professor.
There is another use of backmasking at the start of track 15. When played in reverse, the "favorite joke" is as follows: "So I'm walking down the street, right? And I saw this prostitute, right? And I said, 'How much?' She said, 'For $300, I'll do anything you want.' I said, 'Bitch, paint my house!'" The joke, played forwards, is sampled in the Soul Coughing song "$300" on El Oso.
Fellow comedian Dave Chappelle is one of the voices heard on the album. When a group of black people are complimenting Chris on "Niggas vs. Black People," Chappelle is the one that asks Rock if he "smokes weed." Chappelle also appears in the "opening act".