Homer spends New Year's Eve in the Springfield Penitentiary after getting caught bribing an official. An FBI investigator offers to reduce his jail time if Homer agrees to go undercover as an informant to investigate Fat Tony. When Homer forges a special bond with Fat Tony and his family, he becomes conflicted between his obligation to the government and his loyalty to his new family. After an unexpected turn of events, Fat Tony's cousin Fit Tony seeks to settle a score with Homer, but winds up teaching him an important lesson. Blackboard: 'Candy Canes are not Elf bones'.
FAN DESK VERDICT A top-shelf entry. Not quite canon, but you’ll be quoting it all week — the fan desk says don’t skip.
The Simpsons S22E09 (“Donnie Fatso”) first aired on December 12, 2010.
In the US, The Simpsons season 22 — including this episode — is available on FX, Hulu, Disney+, fuboTV, DirecTV On Demand, Spectrum On Demand, YouTube TV, FOX One Amazon Channel, Hulu on Disney+, Amazon, Fandango at Home, and AppleTV.
Fans rate The Simpsons S22E09 (“Donnie Fatso”) 7.6/10, which puts it in the great tier for The Simpsons.