Tom Tucker once lied about having a brother in "Screwed the Pooch". Here, his actual twin brother is seen.
Donald Trump's former National Security Advisor, Michael Flynn, was meant to be depicted in the episode, but late in production the writers deemed the reference not timely enough and replaced him with Roger Stone.
The Sleepy Hollow character depicted is Ichabod Crane, in a scene from the pilot episode. Richard Appel noted in an interview that the Sleepy Hollow scene was a random gag tossed out by Patrick Meighan. Due to its randomness and the red tape involved in securing the rights to the footage, it was nearly dropped.