It is revealed that Hans Moleman was a former mayor of Springfield before Quimby.
Lisa reminds Bart of the song he wrote her for her birthday with the mental patient who thought he was Michael Jackson. Bart wonders why his parents didn't object to a mental patient staying in his room all night to which Homer off handedly remarked "different time". The voice actor was actually Michael Jackson crested under the pseudonym John Jay Smith.
Bart makes a comment that he and Lisa are a good brother and sister team "like [Lilly] and Lana Wachowski." This episode was released after Lana came out as trans in 2010, but before Lilly came out in 2016.
Pharrell Williams appears in this episode, which begins with different cities in USA singing similar town anthems. In March 2015, Pharrell and Robin Thicke were forced to pay for copyright infringement for the song Blurred Lines.