Here is some adult humor found in Cars ﬁlms. Movies A Cars (2006) 0 When everybody notices that Lightning McQueen was missing after Mack arrives in California. Mack asks 'Did I forget to wipe my mud ﬂaps?’ This might mean he forgot to wipe his poop. . When Sally asks what Flo what she sells while in trafﬁc court. she says. 'I have gas.“ Ramone and Mater begin laughing. They were probably thinking about the farting type of gas. . Lightning Mcqueen attempts to commit aenocide in Iran.