The couch gag is a reference to the video game Minecraft. Also, Moe is green and blows up near the end similar to a Creeper.
When Moe sees how effective his news drinking game is, he smiles in same manner as the Grinch from the How the Grinch Stole Christmas! TV special and the rat wears a make-shift antler, same as Max, his dog.
The scene where Homer is sleepwalking is a reference to Bizkit the sleepwalking dog.
The quote by Skinner "Skate, skate as fast as you can, but I'll catch you I'm the Principal man" is a reference to the Gingerbread Man.
The scene on the myPad with the bubble game called Alaxies is a reference to game Osmos.
In the scene where Chief Wiggum plans to execute Snake, Officer Lou attempts to assemble an electric chair made by IKILLYA, which is a parody of the Swedish furniture maker IKEA.
The PlayStadium4 is a parody of the PlayStation 4.
The name of this episode is possibly a reference to the series Vega$.
Adele is mentioned in this episode.
The title could also be a reference to pop singer Kesha who until 2014 had a dollar sign in her name.
Almost a year after this episode was released, Microsoft announced The Simpsons DLC for the game Minecraft, which was referenced in the couch gag.
Man of Steel is referenced again, when Milhouse gives up Snake to the Police, showing Snake's photos from the Police with the caption "Man of Steal", and this could be also a reference to the previous episode "You Don't Have to Live Like a Referee".
Bart has a different relationship with Snake then he did in "Separate Vocations" and "Treehouse Of Horror Ix" (In the former Bart was almost deliberately run over by Snake in his car, while in the latter Snake was going to be killed and vowed he kill all the witnesses of his crime, including Bart.). In this episode Bart tells Snake that Outlaws have to stay together. It can be argued that Treehouse of Horror IX's plot is non-canon and in Separate Vocations Snake tried to kill Bart because he was with the police while this time around Bart isn't with or siding with the police.