Biting-the-Hand Humor: While burning most of the sugary sweets and food products in town, the police throw a pile of Butterfingers into the flames. The fire rejects the Butterfingers, causing Chief Wiggum to comment that the fire "doesn't even want them". This gag cost the Simpsons their contract with Butterfingers and has been cut from all American reruns (including syndication)note most international versions, such as the Brazilian dub, have the scene uncut, though the season 13 DVD box set version has the scene intact and Butterfingers' contract with the Simpsons franchise has been renewed in 2013.
Two episodes later the blackboard gag is "I will not bite the hand that feeds me Butterfingers".
Does This Remind You of Anything?: The entire episode plays with the idea of sugar being equatable to a drug, especially during the scene where Homer, Mr. Burns, Apu, and Count Fudgula smuggle sugar into Springfield. The scene that best hammers this in is when Disco Stu sucks up lines of sugar through a straw in a manner akin to snorting cocaine (which is funny, considering a report in 2012 stated that sugar addiction is similar to cocaine addiction).
Fat and Proud: Most of Springfield is overjoyed when they're announced the world's fattest town. Only Marge is concerned that they're celebrating obesity.
Fate Worse Than Death: Lisa doesn't initially believe that getting sugar back is worth Homer and Bart risking their lives. Until Marge announces she steamed limes for dessert, and Lisa shoves them out the door.
In Memoriam: This episode was dedicated to Ron Taylor, the voice of Lisa's saxophone mentor and friend, Bleeding Gums Murphy (whose character died before his actual voice actor did).
Not in My Contract: Homer said that and fled when the sugar-smugglers tried to collect payment. Their leader then read the contract and realized Homer was right.
Reverse Psychology: Homer tries this on a seagull that steals his map to the sugar rendezvous point. It fails.
Rule of Three: Readied in his diving gear, Homer falls backwards off the top of Burns' yacht, landing on the lower deck. He tries again, landing on the flat surface of a nearby whale. He quips "I'm only gonna do this one more time" before managing to land in the water.
Sarcasm Mode: Garth Motherloving "agreeing" to Marge's suggestions.
Shout-Out: Homer refers to Marge throughout the second half of the episode as variations of Erin Brockovich (such as "Erin Chocosnitch").
One of the sweets burned in the fire is a promotional chocolate statuette of Johnny Depp from Chocolat.
Garth Motherloving bribes Homer into helping his plot by showing him a smoking Oompa-Loompa.
Who Writes This Crap?!: Homer doesn't pay the sugar dealer because he claims it wasn't part of the deal. The guy double checks the contract, finds out it really wasn't, and demands to know which of his subordinates actually wrote it.