In the scene where the guys are sitting in Peter's living room after becoming cops, and Joe is looking out the window, allegedly watching his wife Bonnie undress (he says he likes to imagine she is a strange woman who lives in his house), it would be physically impossible (without mirrors) for Joe to watch Bonnie undress from Peter's front window, being that Joe and Bonnie live next door to Peter, not across the street.
When Meg knocks out Brian, the framed family photos on the kitchen wall are in a different order than seen previously.
Joe is in the Griffin living room, looking across the street "watching Bonnie undress". But Joe and Bonnie live next door to the Griffins, not across the street.
Mayor West, Tom Tucker and Joe Swanson says "Cartagenia" instead of "Cartagena" (without the "i").