At the party, Professor Pyg serves meat pies made from human organs to his high-society guests. Actor Michael Cerveris, who plays Professor Pyg, also played Sweeney Todd in a Broadway revival of Sweeney Todd: The Demon Barber of Fleet Street (1982), in which Todd's victims are turned into meat pies by his accomplice, Mrs. Lovett. Cerveris received a Tony nomination for his performance.
When Bruce drives away from the campsite, the tires screech. This sound is not possible to make when driving on soil, it is characteristic of paved roads.
At 8:40 the card states in French "Vive la révolution" or in English "Long live the revolution". This was the French reaction to queen Marie-Antoinette's "Let then eat cake".
At 32:20 Pyg says to Sofia in Italian "Mangia, signorina" or in English "Eat, miss".
The episode's title "Let them eat pie" references a quote allegedly attributed to Marie-Antoinette, queen of France in the 18th century. When told that the French peasants were so poor that they could not even afford bread to eat, her reaction was "Let them eat cake.". As cake was even more expensive than bread, this showed her total disconnect with the plight of the poor.