Mario has to go on a diet, which means no more spaghetti.
Mario's horrible eating habits cause him to have a heart attack, and it's game over for him if he doesn't lose at least 1kg of weight by the end of the day, which can only mean one thing: a diet. Meggy offers to help him prevail, but with her methods only further creeping the plumber out, can Mario lose enough weight to survive the day?
- Acrofatic: This is the norm for Mario, but he takes it up a notch when he uses Tari's extra Wii Balance Board like a skateboard to pull off some rather impressive grind moves… before it explodes. Then at the episode's climax he climbs a skyscraper without any equipment.
- An Aesop: As Meggy learns when her attempts to force Mario on a strict diet regimen only drive Mario insane, not every method of helping others is suited to everyone's specific needs.
- Artistic License – Physics: If Mario really weighed infinity kilograms, he'd be a literal black hole. Also, Meggy is evidently able to lift infinity kilos with minimal effort. Chalk it up to Rule of Funny.
- Aside Glance: Meggy gives one when Mario pulls a Godfather meme after she handed him a can of vegan spaghetti.Mario: "Look at how they massacred my boy…" (cut to black-&-white shot of Mario crying over spaghetti's grave)
- Blatant Lies: SMG4 claims that he's the master of fitness, Smash Cut to a view of Luke with a fish eye lens applied to make him look fatter.
- Continuity Nod:
- The Mario Cells from "Mario's Inside Story" appear in Mario's stomach to toss out the head of broccoli Mario forces himself to eat.
- When Mario comes to Luigi, he's in the middle of tending to the flower shop he opened in the last episode.
- Mario getting attacked on top of a skyscraper by flying enemies while enraged and having green skin happened before in "Free Lunch For Mario".
- Earn Your Happy Ending: The episode ends on a happy note with Mario managing to bring his weight down to a survivable infinity-minus-1kg after scaling the side of a building by hand to escape the police.
- Head Desk: Meggy grabs a dedicated head-slamming table for this purpose when Mario's cells reject the healthy food she gets him to eat.
- Hulking Out: When Mario finally snaps from Meggy’s draconian tactics, he turns into a raging maniac with a greenish hue. In a double-reference, he also pounds his chest, climbs a building, and attempts to swat down Meggy's plane like King Kong.
- Jerkass Realization: Mario and Meggy have a mutual one in the climax: Mario when Meggy says she's only been trying to get him on a diet because she cares for him and wants him to live a long life with his friends, and Meggy when she realizes the methods she's been using really don't work for Mario and were only making him miserable.
- Laborious Laziness: Mario is so intent on avoiding exercising and eating healthy that he's willing to run all across the city and scale a skyscraper in a bid to avoid Meggy. Then it turns out that was enough to lower Mario's weight to infinity minus one.
- The Ludovico Technique: After Mario’s body physically rejects broccoli, Meggy’s next idea is to condition him by forcing him to watch VeggieTales in the style of the Trope Namer. All she accomplishes from this is a jumpkick to the face after Mario escapes from his restraints.
- Major Injury Underreaction: At the start of the episode, Mario bites off Meggy's hand (she was holding a tempura shrimp-bunned hot dog). She barely reacts. At the doctor's office, we see her hand back in place with a bandage around her wrist. In the next sequence, even the bandage is gone.
- Mouthscreen: The camera zooms right into Meggy's mouth as she concludes that Mario needs to go on a diet, complete with slow-mo.
- My God, What Have I Done?: Meggy's reaction to her Tough Love sending Mario on an Unstoppable Rage through the city.
- Nutritional Nightmare: Mario's eating habits cause him to accrue infinite weight and detonate the weighing scales, which makes sense considering that a Nikocado Avocado-style mukbang was apparently his breakfast.
- Readings Blew Up the Scale: Mario is so heavy that when Meggy first weighs him, the scale gives a readout of an infinity sign shortly before exploding.
- Sanity Slippage: Meggy's efforts at keeping Mario from eating badly cause him to go crazy, preceded by a bout of Laughing Mad that unnerves even a distantly-observing Karen.
- Screw This, I'm Outta Here: Mario tries to get out of his diet by saying that his time has come like Master Oogway and turning into flower petals, but Meggy drags him back before he can finish.
- Shout-Out: Combined with Mythology Gag, Meggy enters Mario's room humming the Super Mario Bros. theme (something Mario often does when he comes into a scene). Later, after deciding to put Mario on a diet, she gets him to eat broccoli by quoting a couple of Mario's most memetic lines from Mario Teaches Typing 2 to get through to him.
- Tough Love: When Meggy's attempts at getting Mario to lose weight don't bear fruit at first, she resorts to keeping him from any kind of junk food at any cost, and never gives up pursuing him. At the end, she straight-up tells Mario that she's only doing all of this because she cares about him, though she also admits that she stuck too closely to what her fitness classes taught her without taking individual needs into account.
- Unstoppable Rage: Parodied. Mario goes on a violent rampage while Hulking Out over being denied fatty foods… except his acts of rage are either tamer than his usual antics (tipping a garbage bin, lightly kicking an empty can, gently throwing Old Man Hobo's guitar on the ground and making him depressed), or not much different (trying to drown a man, hitting the VeggieTales cast with his kart).
