The Simpsons Season 20 Episode 4

After Homer gets eaten by a demonic polling booth an 'untitled robot parody' shows Lisa's Christmas present,a Malibu Stacey car,turn into a transformer as inanimate objects around Springfield follow suit and declare war on each other,Marge's peace suggestion being less than helpful. Then,after accidentally killing Krusty,Homer is approached by ad men to murder celebrities to avoid paying them royalties for product endorsement - but the illustrious ghosts fight back. Finally Milhouse unwisely conjures the Great - and cannibalistic - Pumpkin on Hallowe'en,requiring a giant turkey to come and save the kids of Springfield.