We Fixed a Truck

Synopsis
Finn and Jake invite over Banana Man to help fix a truck they found, which he tries to use to become good friends with his neighbors.

Plot
The episode opens with Finn pushing an old truck that he found up a hill while singing a song about his luck in finding the truck. Finn honks the truck's horn to wake Jake up, and Jake looks out the window with BMO. Jake stretches to the ground while holding BMO and asks Finn where he found it. Finn says he found it in the woods and named it "Hot Daniel." He says they could do some "Pretty neat stuff" with it. Jake wants to try the truck, but Finn says it is broken. After discovering that BMO and Ice King know nothing about cars, Jake thinks of Banana Man.

Banana Man comes with some soda and a radio. He opens the engine and sees the problem: the cylinder head is missing. Finn asks what it means, and Banana Man explains. Banana Man finds the parts in the back of the truck, but says that they do not know why the past owners removed it. He then sings a song while the four fix the truck during a montage.

Sunset comes, and Jake asks if they want to continue fixing in the morning. They all agree, except BMO, who replaces its batteries and continues working while listening to Starchy's late-night show. A Banana Guard calls Starchy and says he thinks Princess Bubblegum has been replaced by a lizard. Banana Man returns, saying he could not sleep and says he figured out why the past owners removed the engine block. He says "It was really nice hangin' with you fellas," and he thinks it is lonely in his home. BMO asks if he has a girlfriend. Banana Man says he does not want to be alone but is good at it.

Morning arrives, and Finn shows up, giving BMO a cup of coffee. Finn compliments what they did to the truck. Banana Man wakes up and screams "I fixed it! Are we best friends yet?!" and sees Finn. Banana man tells Finn that he got a new cylinder head. They add the parts and drive the truck around. Banana Man sees a female Banana Guard, and the three encourage Banana Man to go talk to her. Jake drives it nearer to the guard and introduces him to her. They then drive away, making dust land on her face. They drive into the Candy Kingdom and see Bubblegum running away from and angry mob. Jake puts her in the truck and gives her a cup of tea. BMO offers a bug to her to see if she really is a lizard. The imposter eats the bug with her long tongue and transforms into a giant reptile. Before it can do any harm to them, Jake pushes it off the truck. After driving for a bit, Banana Man turns the truck around and accelerates at Finn's orders. While they are driving, Finn pulls Banana Man's peel off and throws it under the tire, causing the truck to rotate at a high speed. The vehicle then goes up a ramp in the road, and before the truck slams into the lizard, Jake turns into a parachute to steer the gang safely onto the ground. Princess Bubblegum comes out of the sewer and asks Finn what happened. Banana Man is arrested for being naked. BMO cries because the truck blew up, while Finn and Jake give thumbs up.

Major Characters

 * Finn
 * Jake
 * Banana Man
 * BMO
 * Reptilian Clone

Minor Characters

 * Princess Bubblegum
 * Ice King
 * Candy People
 * Banana Guards
 * Female Banana Guard
 * Banana Guy
 * Candy Heart
 * Candy Magician
 * Chet
 * Cinnamon Bun (unofficial because of his departure to the Fire Kingdom in "Earth & Water")
 * Cinnamon Roll
 * Chocoberry
 * Jam Jam
 * Marshmallow Kids
 * Mr. Cupcake
 * Peppermint Butler
 * Pineapple Guy
 * Pink Bubblegum Bubble
 * Starchy
 * Sugar Cube
 * Snail

Songs

 * "Oh, It's Just My Luck!"
 * "Manlorette Party"
 * "Hanging Out Forever"

Trivia

 * Ice King still inhabits the Tree Fort.
 * According to the titlecard, Finn probably found the truck in a tree.

Cultural references

 * The episode's "lizard replicate" sub-plot references the "reptoid hypothesis" conspiracy theory advocated by and others, which claims that many—if not all—people in power are actually shape-shifting reptilian aliens.
 * Starchy's late-night radio show Graveyard Shift is a reference to, a talk and call-in show which frequently deals with paranormal and conspiracy topics, notably including David Icke's "reptoid hypothesis." Though the show is only broadcast for 4 hours, in most markets it is followed by an additional hour of clips from a previous show—matching the 5 hour run time Starchy's show claims.
 * The pick-up truck which Finn, Jake, and Banana Man fixed is a 1954 Chevrolet 3100.
 * While BMO is sleeping, its screen displays a pair of flying toasters. This is a reference to a screensaver module included in the  computer software series.
 * When BMO searches his memory for information on fixing cars, its screen displays a waving flashlight. This is a reference to the waving flashlight icon displayed when searching for files in Windows 98.

Episode connections

 * Multiple background music from previous episodes return, including from "When Wedding Bells Thaw" and "Belly of the Beast."
 * In one scene, Finn, Jake, BMO, and Banana Man go to the same spa in the Breakfast Kingdom first shown in "Hitman" to steal some grease in order to make biodiesel.
 * Banana Man mentions quite a few events from the episode "The New Frontier."
 * Finn names the truck "Hot Daniel," an exclamation he uses in "Vault of Bones" when Flame Princess saves him from the Giant Goo Skull.
 * During the car-fixing montage, BMO does the same dance on the hood of the car that Banana Man was practicing in "The New Frontier."

Errors

 * Cinnamon Bun is seen in the angry mob chasing the fake Princess Bubblegum despite refusing to return to the Candy Kingdom in "Earth & Water." This may be a similar looking cinnamon bun, though.
 * BMO crushed a soda can on its head and threw it away, but it was not seen on the ground right afterwards.
 * When it turns to night and Banana Man starts to walk away to go back to his house, he is not wearing his black shoes. He is shown wearing shoes in every other scene in the episode.
 * BMO's star is sometimes on its head or on the side of its controls while singing the song "Hanging Out Forever."