Factual error: The criminologist describes the events of the movie as taking place "on a late November evening". In the very next scene, Brad and Janet are driving in Brad's car, and President Richard Nixon's resignation speech is playing on the radio. Nixon resigned in August of 1974. (Time)

Other: When Riff Raff and Magenta burst in after Frank's song, Janet steps away from Frank's side into Brad's arms. Watch Brad's face - you can clearly see the look of pain, as Janet steps on his foot in four inch spike heels. (Time)

Revealing: The saxophone Eddie plays in "Hot Patootie" has no reed. (Time)