* AcceptableTargets: In "The Hog Jamboree" Doom transforms Harry Slime into a living motorbike as part of a plan, and warns him that if he fails, he'll instead be turned into something worse, like "an addled egg, a slug, or...''a politician!''"
* BigLippedAlligatorMoment: The Badly-Drawn Brothers' segments are like this.
* EarWorm: The theme tune.
* HilariousInHindsight: In "Computer Chaos", at one point Marlon and Bluey are trapped in a videogame and Bluey has to control them. As he experiments with making Marlon jump, the latter (a penguin, remember) comments "Whoa! I got WesternAnimation/HappyFeet!"
** A team of Penguins who fight evil? [[WesternAnimation/PenguinsOfMadagascar That sounds familiar...]]
* SuspiciouslySimilarSong: In "I Married An Android", a copyright-friendly imitation of the ''Film/JamesBond'' theme plays when Slime attempts to infiltrate the Penguins' hideout while they're sleeping, followed by one of the ''Series/MissionImpossible'' theme.
** Then in "[=CatPig=]: Cat of Iron", a pseudo version of the Creator/AdamWest Batman theme is used.
* TastesLikeDiabetes -- Recurring character The Sweetheart Fairy Angel is based on this.
** Also in 'Nightmare at Tea Time, Doom's worst nightmare is being trapped in 'Planet Cute' which was featured in an episode of WesternAnimation/CountDuckula.
* TheWoobie -- Harry Slime