Fruit of the Loon

"The Doctor: Go! Now! Don't drop the banana! Jack: Why not?! The Doctor: Good source of potassium!"

- Doctor Who, "The Doctor Dances"

A character has a piece of fruit. There is no reason for him to have the fruit; he just does. Often, he is an eccentric character and will pull out the fruit whenever the moment is quite tense. It's a Fruit of the Loon, you see.

This works extremely well with bananas (because Freud Was Right, anyone can slip on a Banana Peel, and banana is an Inherently Funny Word), but it also works with apples, oranges, kumquats, lemons, tangelos, pineapples and, in one case, a satsuma. Often makes use of a Fundamentally Funny Fruit.

Compare The Snack Is More Interesting.

Anime and Manga

 * Excel Saga: The opening sequence features Hyatt suggestively eating a banana, having already thrown several peels on the ground, and Excel slipping on one of the peels. And the line of the theme song playing at that moment is even about slipping on banana peels. This being Excel Saga, all this is completely par for the course.
 * Kirika in Eiken can often be seen eating a banana in a way that is not at all suggestive in any way.
 * Axis Powers Hetalia: When Spain lets Italy leave him during the Seven Years War, he pulls out a banana and says (how redundant), "nice bananas." Readers are still trying to figure out what that was about.
 * In the Alice in Wonderland Whole-Plot Reference episode of Ouran High School Host Club, bananas play a role, possibly a reference to the running Banana Peel gag.
 * A minor recurring character also has a strong thing for oranges.
 * Ranma ½ has Principal Kunou, who not only produces pineapples any time he can, but also has a small pineapple tree growing out of his head.
 * Take note that some of these pineapples explode. He also seemed to have a thing for coconuts in his introductory story/episode.
 * Evermary, who is more or less Haru's grandfather in Rave Master, breaks up a potential confesion of love with the offer of an apple. Apples, in fact, are something Evermay loves so much that he once abducted a small child because the baby happened to have apple-red cheeks.

Film

 * The Adventures of Buckaroo Banzai Across the Eighth Dimension: In the middle of chasing down the bad guys, the Hong Kong Cavaliers run through Buckaroo's lab. There is a watermelon in a massive hydraulic press. New Jersey stops, nonplussed, asks, "Why is there a watermelon there?" Reno replies, "I'll tell you later", and they immediately resume pursuit of the bad guys. It's never mentioned again.
 * In the fanclub newsletter, it was revealed that (in story) they were developing watermelons which could be airdropped without parachutes into dangerous famine stricken areas. It was also hinted that the scene was filmed as a Take That directed at a meddling studio exec.
 * Further, in-story the effort was abandoned when someone at the Institute belatedly realized that watermelons that could be airdropped couldn't be cut open by anything short of industrial equipment.
 * There is a direct Shout-Out to this scene in the BattleTech novel Warrior: Coupe. In this case, the watermelon actually ends up accidentally saving a couple of researchers' lives by.
 * In the 1968 version of The Producers, the character LSD pulls a banana seemingly out of nowhere after performing his audition and begins sucking his thumb. Where the banana came from in those skintight pants is best left unexplored.
 * To put things in a historical context, there was a rumor at the time that smoking banana peels had a hallucinogenic effect. LSD peeled the banana, threw the fruit away, and cuddled the peel like Linus with his blanket.
 * Captain Barbossa from Pirates of the Caribbean is often seen carrying around and/or eating an apple.
 * In Curse of the Black Pearl, when Jack is inspecting his new "crew" on the pier, he's holding a banana. It's never mentioned, it's not Lampshaded or Handwaved, it's just... there.
 * The Audio Commentary doesn't explain it either, Gore Verbinski and Johnny Depp simply going "The banana!" and then moving on. Could be an inside joke.
 * Weirdly, as bananas as we now know them are Newer Than They Think (they were only produced by selective breeding in 1836) this is part of the Anachronism Stew. Though hardly the most glaring.
 * Actually, the distinctive bright green 'Granny Smith' apple is even newer -- 1880s -- though obviously apples generally have been around since ancient times.
 * Woody Allen's futuramic Sleeper has him searching for food and coming across a farm where insanely large fruit is being grown. He picks a banana the size of a canoe, and when a guard runs up to catch him, the two slip repeatedly on the carpet-size banana peel.
 * In the Marx Brothers' classic Horse Feathers, Harpo pulls a banana out of his pocket which has a zipper built into the peel. He eats a couple of bites; when called away, he re-zips the peel to save the rest of the fruit for later.
 * The Kobayashi Maru scene in the new Star Trek film. Director's commentary reveals that Chris Pine "just looked so much cockier" whilst munching on an apple.
 * This parallels a scene in Star Trek II: The Wrath of Khan where Kirk eats an apple as... he reminisces about the Kobayashi Maru. Apparently this was a complete coincidence.
 * Mr Smith in Shoot Em Up really likes carrots. He munches on them. He quotes Bugs Bunny. He shoves one through a bad guy's skull...
 * Young Einstein; the title character used apples to help him think, and always seemed to have one handy.

Literature
"You: As any idiot can plainly see, I'm taking my pulse. Salesperson: With an eggplant? Why don't you just squash your thumb against your artery like everybody else? You (with great dignity): If I wanted a squash, I would have selected a squash, wouldn't I? I'll take this eggplant, and make it snappy."
 * In Raymond E. Feist's Riftwar sagas, the magician Nakor often pulls out an orange from his pack and offers it to people. Searches always find his bag empty, but he can pull out an orange anytime he wishes. This is later explained, but when you meet him, he appears to be a strange crazy man who offers you an orange, or if he doesn't like you, sits there eating one while ignoring or mocking you.
 * For a period, he pulls apples instead. It's not by choice - it turns out his bag contains a permanent portal to the bottom of one of a specific fruit seller's bins. Though he seems fine with the free apples.
 * In The Stand, it's used for horror: When a woman tries to assassinate Randall Flagg, she finds that her concealed knife has turned into a banana.
 * In Anansi Boys by Neil Gaiman, the protagonist, Fat Charlie, arrives on a small Caribbean island with no luggage, and as a result ends up checking into his hotel with nothing but a lime (after he tried too hard to sound interested in small talk). This leads to him being universally known on the island as "the man with the lime"; he ends up carrying it around constantly, and eventually
 * One Dave Barry column explained one way to take your pulse: get so drunk you can hear your pulse pounding in your head, and then go out and buy a stopwatch. If you find you're in a grocery store which doesn't sell stopwatches, an eggplant is fine, too.

"He aimed the banana carefully, then raised it to his lips and blew across its barrel before peeling it."
 * The Eighth Doctor, in the Eighth Doctor Adventures novels, had a Guile Hero double-act with his Plucky Girl Sidekick Sam. One of their tricks invoked this trope—he'd rush at an armed antagonist shouting, "Bangbangbangbangbang!" and waving a banana, pretending to fully and genuinely believe it's a gun (complete with Dirty Harry reference -- "Well, to tell you the truth I think I’ve lost count, sorry about that. So you’ve got to ask yourself one question. Do you feel lucky... sir?"). While said antagonist boggled at his Refuge in Audacity and wondered what the Doctor was on, Sam would steal said antagonist's gun.


 * In the Harry Potter books, Luna Lovegood usually wears earrings made of what look like orange radishes. They´re actually Dirigible Plums, but still, fruits.
 * In the sixth book, while searching for a note she pulls out a Gurdyroot (a plant resembling a green onion) from her bag. Which she then gives to Ron.

Live-Action TV

 * Doctor Who is a frequent invoker of this trope:
 * In "The Doctor Dances", where the above quote originates, the Doctor gives Jack a banana. There's no reason for him to have a banana, but since his pockets are bigger on the inside, he could conceivably have carried one around just waiting for a chance to use it.
 * In "The Girl in the Fireplace", the Tenth Doctor also carries a banana and manages to invent the banana daiquiri 100 years too early.
 * In "The Christmas Invasion", the bathrobe that Jackie Tyler put on the Doctor has a satsuma in the pocket. The Doctor uses the satsuma as a weapon.
 * The Doctor having a banana in his pocket cropped up earlier in the classic series story The Two Doctors. It was never commented on by any of the characters, it was just there. Then again, the story was very much vegetarianism...
 * Several Ernie and Bert sketches from Sesame Street involve bananas and other fruits:
 * In episode 4, Ernie pretends that a banana is a telephone. This sketch was remade for episode 3941.
 * In episode 179, Bob reads "The Magic Apple", with Ernie as a farm boy and Bert in drag as a princess.
 * In episode 292, Cookie Monster can't decide whether or not to eat one of Ernie's four apples, so Ernie draws and crosses out an endless series of alternating 4s and 3s on his paper.
 * In episode 674, Ernie eats the inside of a banana and gives Bert the peel.
 * In episode 747, Sherlock Hemlock helps Ernie solve an apple mystery.
 * In episode 1037, Ernie ate Bert's chocolate ice cream, so Ernie mashes a banana, puts ice cubes on it and covers it with beef gravy.
 * In episode 2487, Ernie counts fruit in a bowl; just when Bert thinks Ernie is done, Ernie counts all of the fruits he does not have.
 * In episode 2558, Ernie holds a banana in his ear, supposedly to keep the alligators away.
 * In The Comic Strip Presents episode "Strike", in the spoof movie within the episode, 'Meryl Streep' is seen peeling oranges in every one of her shots.
 * In a delightful inversion, one Monty Python's Flying Circus sketch features John Cleese as a self-defense instructor who only prepares his students for attacks by assailants wielding Unexpected!Fruit. After inducing one of his students to attack him with a banana, Mr. Cleese pulls out a gun and shoots him.
 * In the first few episodes of Mystery Science Theater 3000's second season, Joel would pop a grape every time the Commercial Sign lit up. This was supposed to signify a Pavlovian response (lampshading Joel's status as a lab rat), but the writers got sick of having to remember doing it every time (and Joel got sick of the grapes), so it was quickly dropped.
 * In at least a few episodes, it is quite clear that Joel's hand is empty and he is only pantomiming putting something into his mouth.
 * Fridge Brilliance - it really is Pavlovian! He's popping and he doesn't even have any grapes!
 * In Life, Charlie Crews has an obsession with fruit, but it makes a kind of sense, since there practically was no fruit in prison. Still, he likes handling various strange and unusual fruits, which his partner Dani comments on.
 * It's a personal pineapple!
 * "You're not really here to box the kumquat, are you?" - It Makes Sense in Context.
 * In a sketch on The Muppet Show, Fozzie played a western outlaw whose weapons were all fruits and vegetables. Leads to the line "I didn't know the pickles were loaded". (It was a case of Gherkins Akimbo, you see.)
 * Another episode had Fozzie doing the "banana in the ear" gag with Avery Schreiber.
 * Shawn Spencer of Psych has an obsession with pineapples that has become a Running Gag.
 * An early episode of How I Met Your Mother features an inexplicable pineapple appearing in the apartment after a wild night of boozing. At least it's tastier than a traffic cone...
 * On My Name Is Earl, Earl's friend Frank has been moved to a halfway house, and has not been eating because the food is spiked with tranquilizers. Since he is very hungry, Randy feeds him an apple slice he had in his pocket. Earl looks at Randy, who then explains, "Oh, I've been keeping apple slices in my pocket for awhile now."

Professional Wrestling

 * The perpetual midcarder Carlito (the "cool" Caribbean) was famous for always bringing an apple with him to the ring for his match (leading many to nickname him "The Bad Apple"). He invariably punctuated each match by spitting chewed-up chunks of apple in the opponent's face. The gimmick of spitting fruit was puzzling enough, but if he was from the Caribbean shouldn't he have been spitting a pineapple or a coconut?
 * Both are items that it's rather hard to take a nonchalant bite out of, unless you've got the jaws of a pit bull...

Tabletop Games

 * Not quite a fruit, but the Magic Items I sourcebook for GURPS includes the Mad Nut: a magical nut that causes anyone carrying it to treat it as their most valuable possession.
 * One print of Lure had a dryad holding an apple.

Video Games

 * In Metal Gear Solid 4: Guns of the Patriots there's Drebin, a shady weapons dealer who often has an apple for no apparent reason. In his first appearance, he uses a white handkerchief to make an apple out of a hand grenade.
 * In Eric the Unready, you officially start on your heroic adventure by being the only one able to draw the legendary banana out of a stone.
 * It should be noted that in Urban Dead, "banana" is one of the few words that can be spelled using only the letters in the Zombese alphabet.
 * However, zombies don't eat fruit, so it's usually used as a euphemism.
 * Overhead space shooter Tyrian somehow features an entire wacky cult that revolves around fruit, which started off as weird attempt to justify (lampshade?) the random pieces of fruit that some enemies drop in video games such as this one. Fruit begins to show up more and more as you go through the game. First, enemies drop some strawberries. Then you start finding powerful subweapons codenamed for cherries and tangerines. Then you stumble across a purchasable ship that is a giant carrot that mounts fruit weapons like the Banana Bomb.  It's that kind of game.
 * Worms Armageddon also has banana bombs. When the bomb is dropped, it explodes into a cloud of bouncing bananas, which are also explosive. (Of course, that game also has carpet bombing with actual carpets, and flying Super Sheep.)
 * StarTropics features a running gag about having bananas in your ears.

Web Comics

 * As a minor Running Joke, Ctrl+Alt+Del's local nut Ethan was obsessed with a watermelon for a time, treating it as a character.
 * In Far Out There, Ichabod really seems to like apples. He always seems to have one waiting in his pocket, whether there's room in there or not.

Web Original

 * "Put a banana in your ear..."
 * Citrus fruits are not subject to inter-dimensional causality.

Western Animation
"Candace: "I'm calling mom! ...And I am not using the banana this time!"
 * Kim Possible: In "Mathter and Fervent," Kim and Ron walk in on Hego singing in his underwear with a banana. He quickly puts his clothes on, but keeps the banana, stammering out how it's a good source of potassium.
 * In The Grim Adventures of Billy & Mandy episode "Attack of the Clowns," Billy tries to protect himself from evil clowns by wearing as a hat a bowl of tangelos and stuffing two up his nose. When Mandy asks why he think tangelos will protect him, he points to a tangelo vendor whistling sheepishly. Why there's a tangelo vendor inside the school is never asked, though it better that way.
 * In Disney's Mulan, the good guys' plan to sneak into the palace and save the emperor involves the comic relief trio dressing up as women. If them pulling fruit out of the front of their robes as a reveal wasn't amusing enough, one of them pulls out a banana (and not TWO, for that matter).
 * Family Guy had this with Mayor Adam West giving Quagmire a banana and cryptically telling him that "When the time is right, you'll know what to do with it". Later, when Quagmire's being chased by an angry Cleveland, he remembers the Mayor's advice and throws the banana at Cleveland. It bounces off harmlessly, they stop, look expectantly at the banana on the ground, and after a few seconds, the chase resumes.
 * Candace has a famous line with this trope on Phineas and Ferb, referring to a previous scene where she used a banana to practice calling up her crush, Jeremy.