After getting framed for feeding coffee- and prune juice-laced nuts to squirrels in the park, Darwin tries to prove to Gumball that Mrs. Robinson (Mr. Robinson's wife) actually has a good side to her, despite her destructive, sociopathic tendencies. When that doesn't work, they decide to catch her committing a crime.
Tropes:
- An Aesop: You have to accept that some people just aren't good.
- Bad Is Good and Good Is Bad: Mrs. Robinson has her own version of "My Favourite Things" from The Sound of Music which is just a list of things that make other people miserable. Among the things that she lists as giving her delight are toothaches, heartburn, deep vein thrombosis, and the smell of garbage.
- Beyond Redemption: Darwin declares that Mrs. Robinson is "pure evil" after she watches him choke (nearly to death) with a twisted smile on her face. After this, Gumball and Darwin stop trying to prove that she may have a good side, and decide to make her pay for her heinous crimes.
- Bread, Eggs, Milk, Squick: According to the tag on Mrs. Robinson's head, she's 70% cotton, 30% polyester, and made in the fiery pits of the underworld.
- Chest Burster: A caffeine-crazy squirrel appears to burst out of Hank's chest, but actually just crawled under his shirt and chewed through that.
- Enfant Terrible: When Mrs. Robinson was a kid, she let her brother drown and burned down Elmore Junior High on the first day of school, which Gumball implies may have killed some of her classmates. Even as a baby, she tore off the heads of stuffed animals for the fun of it.
- Failed a Spot Check: During Mrs. Robinson's song, she splashes a bucket of cleaning agent all over Principal Brown's car while he's returning. He doesn't notice her prancing away, and assumes that Hank who is cleaning the window is responsible and assaults him instead.
- Freudian Excuse: Defied. Darwin tries to find how why Mrs. Robinson is such a monster. He finds out that she has no actual reason to be mean, and nothing particularly bad happened to her childhood. She is just pure evil. Even Mr. Robinson unable to figure out why is wife is the way she is.
- For the Evulz: Since she was a baby, Mrs. Robinson has taken joy solely in the suffering of others.
- Good Cannot Comprehend Evil: Darwin insists there must be some good in Mrs. Robinson, but accepts he's wrong when she just smiles and watches as she thinks he's choking to death.
- Humiliation Conga: After being like the biggest bitch in the universe, karma bites Mrs. Robinson and it bites hard. While driving away from a crime she committed, a streetlight makes her crash several times, get hit by a pair of trucks, launched into the air by a humongous fireball, falls to the earth, and gets crushed by an ambulance.
- Internal Homage: Mrs. Robinson's final karmic indignity is identical to Ms. Simian's at the end of "The Mystery": having an ambulance slowly back up on top of them. It's even shot the same, including the cut away to wincing onlookers.
- Jerk with a Heart of Jerk: Despite Darwin wishing otherwise, Mrs. Robinson has no good side or justification for her actions. Even when Darwin starts choking on a toy, her only response is to smile maliciously at him.
- Laser-Guided Karma: An attempt to catch Mrs. Robinson for a crime she did fails, causing Darwin to cry out asking if there's any justice in the universe. Then a lamp post she ran into falls over, causing her to get in a very destructive car accident, get blown skywards by a gas truck explosion, hit by a plane, and landing face first on the pavement, before being run over by the ambulance that came for her.
- Literal-Minded: When talking about his wife, Mr. Robinson says "Sometimes man just wants to watch the world burn." and Gumball and Darwin think he's saying his wife is a man. Mr. Robinson tries to clarify that he means mankind, which is equally fruitless ("But she isn't kind!").
- My Hovercraft Is Full of Eels: When Darwin attempts to talk to Mrs. Robinson in her way of speaking, a view from her perspective shows it as not gibberish, but still nonsense.Darwin: Three times did the cheese move sideways to Switzerland by radio. But, she never licked that parking permit.
- Rules of the Road: Mrs. Robinson vandalizes a speed limit sign to say "800" instead of "30", and the drivers immediately speed up until there's a pileup.
- Secret Test of Character: Darwin's final attempt at finding the good in Mrs. Robinson is shoving a toy down his throat and waiting for her to save him. Not only does she ignore his plight, she outright smiles at his suffering before going into her house. Naturally, she prompts Darwin to make her pay.
- Shout-Out:
- A montage of Mrs. Robinson being a jerkass to the people of Elmore is punctuated by a parody of "My Favorite Things" from The Sound of Music.
- Mr. Robinson's monologue about Mrs. Robinson ends with the "watch the world burn" line from The Dark Knight.
- Like Ms. Simian in "The Mystery", Mrs. Robinson faces a Death by Ambulance in the same fashion similar to Jo Jos Bizarre Adventure Diamond Is Unbreakable.
- Take That!: Gumball describes Mrs. Robinson as "Wall Street evil", then decides she's even eviler and changes it to "ads before your video loads evil".
- Tampering with Food and Drink: Mrs. Robinson feeds squirrels nuts that were spiked with caffeine to make them go crazy and later stated to have been soaked in prune juice.
- Tempting Fate: A positive example. Darwin asks "Is there any justice in this universe?!". Well, Darwin, with Mrs. Robinson's Humiliation Conga, what do you think?
