 In a scene where Homer imagines a future without honey, a small green robot resembling WALL-E from the 2008 film "WALL-E", gives him a bottle of honey and then turns Homer into a cube.The bee tombstone that set Jerry Seinfeld a reference to the 2007 film "Bee Movie" where Seinfeld played as the voice of Barry.The Billionaires' Retreat is the parody of the Bohemian Club.