Tempting Fate/Western Animation

"Sokka: The universe just loves proving me wrong! Toph: That's 'cause you make it too easy!""
 * Avatar: The Last Airbender:
 * While the Gaang's ship is under attack, Sokka says, "Things couldn't get much worse!", then a giant sea serpent pops out of the water.

However, things go wrong in the next few scenes. In prison, a Dai Li agent delivers Long Feng his meal, but also quietly reassures Long Feng that the organization retains loyalty to him, not the King. Toph goes to meet her mother, and ends up being captured in a metal box by Master Yu and Xin Fu. The Kyoshi Warriors arrive before the Earth King, who formally welcomes them. "Waspinator: Wazzpinator having good day! Not get shot once! (gets shot by Rattrap)"
 * The trope is however swiftly subverted, as a stray shot causes the serpent to attack their pursuers instead, prompting a "Thank you, the universe!" from Sokka.
 * In the two-part episode "The Boiling Rock", the Warden says that no one has ever escaped from his prison.
 * Having captured Toph in a metal container, and in the process of carting her home, Xin Fu gets sick of her yelling and taunts her, saying, "You might think you're the greatest earthbender in the world, but even you can't bend metal!" Guess what skill she proceeds to teach herself and use in the next few hours.
 * At the end of "The Earth King" Aang and Sokka make their way over the plains surrounding Ba Sing Se on Appa, convinced that things are finally going positively for them. They have the Earth king on their side, Long Feng is arrested, Sokka's on his way to see his dad, Aang's on his way to see a Guru who's going to help him master the Avatar State, Toph's on her way to see her mother, and the Kyoshi warriors are coming to Ba Sing Se. Sokka even says "Everything’s gonna work out perfectly, from now on and forever."
 * Batman the Animated Series has "Harley's Holiday", where a semi-rehabilitated Harley Quinn ends up being pursued by the police, as well as Batman and Robin, after a simple misunderstanding. After taking Spoiled Sweet Veronica Vreeland hostage, she then ends up being pursued by gangsters who wish to ransom off the debutante. After Veronica realizes Harley really doesn't mean her any harm, she agrees to drop all charges, provided she gets out of this in one piece. A delighted Harley states: "For the first time today, things are finally looking up!" Enter Veronica's hysterical Army general father, bearing down on them in a tank, Patton-style.
 * Waspinator, the designated Butt Monkey of Beast Wars gets it in "Changing of the Guard":

"Odd: (unconcerned/resigned) I promise never to complain about not having conflicts with my parents again."
 * In one episode of The Boondocks, Uncle Ruckus, preaching to a crowd, says, "Now, let us pray. Lord, I have spent my whole life hatin' you for makin' me black, and now I see I must hate myself, and all those like me, and cause them misery just like your servant Ronald Reagan did. And if ANY of my words don't come directly from the Almighty God himself, then may I be struck by lightning right this very instant. Halle-". Three guesses what interrupted him.
 * Clone High
 * Abe is running for student body president and getting his butt kicked. Gandhi says "At least things can't get any worse." and Abe berates him because of this trope. As if on cue, Cleo dumps him. Gandhi then says, "Wait... at least things can't get any better." Abe says it doesn't work that way. After Abe leaves the scene, as if on cue, a butterfly flies over and gives him a dollar.
 * Parodied wonderfully in the episode where Ponce, a character who had never been seen before and was very obviously introduced just so he could be gratuitously killed off, spends the first half of the episode making blatant fate-tempting statements, such as constantly telling his friends he loves them just in case he never sees them again. Sure enough, he is randomly killed by a flying plastic bag.
 * Code Lyoko:
 * Any time Jérémie makes an assessment of the situation on Lyoko, something immediately happens to make it the opposite. Thus, optimism leads to nothing but trouble, but saying "It's all over!" appears to summon a Deus Ex Machina.
 * "Kadic Bombshell": Aelita asks Jérémie if he can fix the unexpected problem with the Supercomputer. He worriedly tells her, yes, "but the problem is that it might take a little while, and during that time, XANA could..." BEEP BEEP BEEP "...activate a tower!" XANA never lets an opportunity to let the kids tempt fate slide.
 * "Bad Connection": Odd complains at the beginning that he never has any conflict with his parents like a normal teenager. After XANA makes them, along with almost everyone else at the academy, Brainwashed and Crazy, they spend most of the episode trying to kill him. When the mob corners him, we get this line:

"Jérémie: I'm putting it to sleep. Odd would kill me if the Super Scan went off in the middle of his film. Aelita: At any rate, there's not much chance that XANA would launch an attack during the three minutes the film lasts."
 * This textbook exchange:

"Sissi: Or else what, a monster's going to squirt goopy goo all over my face, huh, Ulrich? (guess what happens next)"
 * "End of Take":

"Booker: You won't get away from me! (the worm gets away) Sheldon: He got away from you!"
 * The Titanic reference happened in an episode of Futurama and Totally Spies!. Needless to say, neither vacation turned out very well, although to be fair, the Futurama episode didn't have the Mind Screw that the Totally Spies! episode did.
 * In the U.S. Acres shorts on Garfield and Friends, Booker often hunts worms, an activity which Sheldon declines to participate in, but which he's usually nearby to witness. Consider this exchange:

"Jonathan: Okay, we should be perfectly fine as long as no one says -- Evelyn: I think we lost him! Jonathan: ... Why'd you have to say it?
 * In an episode of The Garfield Show, Odie manages to win the first round of the pet pageant he's in with Garfield's "help". Garfield comments confidently that "we can't lose", only for the announcer to state that the second round would be the talent competition, causing Garfield, who realizes he spoke too soon, to remark: "Boy, can we lose."
 * Lampshaded in the Jimmy/Timmy Power Hour 2. After Libby says "What, you think a date is just going to come crashing through the roof?", and Timmy Turner does so, she raises her finger and proclaims "I shall use this power for good!"
 * Justice League Unlimited:
 * In "Grudge Match", Huntress and Black Canary face off and against brainwashed superheroines in a Glamour Slam. After breaking Hawkgirl and Vixen out of their brainwashing, Huntress is feeling lucky and shouts "Is that all you've got?" to villainess Roulette -- who promptly sends (also brainwashed) Wonder Woman onto the stage. Cue the heroines' Oh Crap expressions.
 * "Divided We Fall"'s "Are you going to fight me, boy?" (Yeah he's gonna.) Just after Flash disappears, Luthor says "what do you know, I did kill him". After Superman overcomes the temptation to burn Luthor to a crisp, it turns out Flash is actually still alive.
 * Subverted in an episode of Mission Hill when Andy French makes a deliberate comment about how he pays the electric bill. The lights flicker off soon as the words are out of his mouth... then flicker right back on, Andy smugly repeating that he did, indeed, pay the electric bill.
 * Played with in The Mummy animated series, where the family is pursued on waters by the Scarab King:

(the Scarab King suddenly pops out of nowhere)"

"Burns: You know, Smithers, I think I'll donate a million dollars to the local orphanage... when pigs fly! (they laugh; the pig sails across the sky before them) Smithers: Will you be donating that million dollars now, Sir? Burns: Nooo, I'd still prefer not."
 * Egon Spengler of The Real Ghostbusters once remarked, "Sometimes I think the universe just waits for me to get cocky."
 * In Robot Chicken "Star Wars Episode II", Lando's deal with Vader gets worse and worse as he keeps complaining about it. Eventually he gets Genre Savvy enough to quit while he's ahead.
 * And later in that same special, Palpatine's borderline Humiliation Conga of problems (including his tray table breaking and spilling coffee in his lap, the airport losing his luggage, his new chair bolted to the floor and right under an air conditioning vent) ends with him saying to a guard, "Here, wanna watch me tempt fate?: Could this day get ANY worse? See, I said it ironically, so I should be safe." When next we see him, Vader is throwing him down to his death.
 * The Simpsons
 * Parodied when the family find themselves competing in a torturous Japanese game-show, Homer tempts fate by saying that he prefers their current predicament to the "lightning round"; he gets struck by lightning. Then, recognising the pattern, he hopefully wonders whether there'll be an "ice-cream round"... and gets struck by lightning again.
 * When Mr. Burns rounds up an all-star baseball team to defeat the Shelbyville plant, he challenges fate to have them all befall nine separate misfortunes. This turns out to be a subversion because only 7 of his players do. (Tropes being tropes, the one who doesn't have a misfortune, Darryl Strawberry, is the one who's taking Homer's spot in the lineup.)
 * Burns also has this line in "Lisa the Vegetarian":

"Homer: Don't be upset, Marge. At least it's not raining! (after a pause... nothing happens) See?"
 * In "No Loan Again, Naturally", Marge is crying after landlord Ned Flanders has evicted the family from their home:

"Rebel 1: I think we're doomed. Rebel 2: Nah, unless they got any big giant robot camels I think we're okay.
 * "Cape Feare", wherein the last thing Sideshow Bob says before being trampled by a parade (which includes elephants) is, "Surely there's no harm in lying in the middle of a public street?"
 * In the McBain movie, his partner mentions that once they take down the evil senator Mendoza, he's retiring in two days, when his daughter's graduating college, and he and his wife will sail around the world like they always wanted to in the aptly-named "Live-4-Ever". He then gets shot 17 times.
 * MENDOZAAAAAAAAAAA-
 * "When two best friends work together, not even God Himself can stop them!"
 * "Take your best shot! I'm wearing seventeen layers!"
 * In "Brother, Can you spare two dimes," after his friends express concern to Homer about the recent destruction of his couch, Homer states "there is no way this day can get any worse". Instead of something happening his friends just stand around awkwardly until Homer repeats the phrase again. This time Smithers comes over the loud speaker and orders him to see Mr. Burns.
 * Family Guy
 * "Dial Meg for Murder" subverts this trope into a comment on the audience's racist assumptions: When Brian talks Meg out of robbing Mort Goldman's pharmacy and the two leave, Mort comments, "Well, at least I didn't get robbed!" Then, "How can I help you four fine black gentlemen today?" The show then cuts away to continue the story, leaving the viewer's familiarity with the trope and with common racial stereotyping to conclude the scene.
 * In "Brian Writes a Bestseller", when Stewie sees that he can't take a cab as he planned because he has no money, he exclaims: "Well, at least it's not raining." He immediately gets knifed in the back and left for dead on the sidewalk.
 * You haven't heard? It was my understanding that everyone had heard.
 * From their Star Wars parody "Something Something Something Dark Side:"

AT-AT walkers appear in the distance.

Rebel 1: Uh, Jim? Robot camels..."

"Stewie: Well, it could be worse. At least I'm not getting stabbed by some random guy on the street. (starts raining) See, it's the exact opposite! (gets stabbed)"
 * In "Tales of a Third Grade Nothing" Stewie changes the failing Cabana Club into the sucessful pLace. When Brian notes that nothing can stop them now, Andy Dick shows up.
 * In "Stewie Goes for a Drive", there's a Call Back to "Brian Writes a Bestseller": when Stewie is running away from home:

"SpongeBob: What could be worse than a giant paint bubble?! Patrick: Ooh! I know this one! (produces a bubble wand, dips in into the paint, and blows another giant paint bubble) TWO giant paint bubbles! (the bubbles collide and form one MASSIVE paint bubble) SpongeBob: I don't think this can get any worse! Patrick: Nonsense! (produces a bike pump to hook up to the paint bubble, inflating it further)"
 * SpongeBob SquarePants
 * "Wet Painters" played with it incessantly. SpongeBob and Patrick are painting a house filled with valuable collectibles. Cue Murphy's Law, involving a paint bubble.

"Squidward: AAAND THE PIZZA'S COLD! OH THIS IS TERRIBLE! NOT THE PIZZZZZA! Oh, how could it get any worse?! (kicks their boat that is out of gas, which rockets back up to a full tank, and DRIVES AWAY ON ITS OWN)"
 * From "Pizza Delivery":

"SpongeBob: I'm every bit as cool as Larry. And if I'm not, let me be struck by... (thunder clap) ...a flying ice cream truck. (Cue falling ice cream truck.) AND LIVE! (Ice cream truck suspends in mid-air just above SpongeBob, then falls on him.)"
 * From "SpongeGuard on Duty":

"Buffy: Willow, short of the apocalypse, nothing's gonna keep us from that party tonight. Giles: Buffy, we're having an apocalypse."
 * Super Mario Bros Super Show
 * "The Bird! The Bird!", Toad is whisked away by a Birdo with extremely bad vision, who thinks he's her baby. This leads the Mario Brothers and the Princess up the tallest mountain in an already snowy land to bring him back. At one point, Mario says that "it could be worse". When Luigi asks how, an Albatoss drops a Bob-Omb nearby. It and the next 4 Bob-Ombs are easily disposed of before they go off, but the next three are dropped farther up the path, setting off an avalanche.
 * In "King Mario of Cramalot", Mario, Luigi, The Princess, and Toad are manacled in a dungeon with a small circumference but a (temporarily) high ceiling. Mario says things could be worse, and Luigi asks how. Mario gives the example that the ceiling could start lowering until it crushed them. No points for guessing what starts to happen, but extra credit if you guessed that the ceiling would be pointy. Mario then says that the room could start filling up with water. It does... start, anyway.
 * Teen Titans: Beast Boy, normally the Genre Savvy one, has been prone to these.
 * On The Venture Brothers,
 * X-Men: Evolution: In the episode "Cruise Control", the X-Men are taking a vacation on a cruise ship. When Boom-Boom is going to breakfast, Storm says to her, "Remember, low profile." Boom-Boom says, "It's just breakfast. What could happen?" Cue the breakfast scene, in which the X-Men accidentally reveal their powers to the passengers and cause a huge mess. Also it's Boom-Boom who starts the whole mess by throwing one of her bombs, although it's Jean using her powers to put out the fire caused by Boom-Boom's bomb that tips off the passengers. Later in the episode, when they're on an island Boom-Boom says the same line ("What could happen?"), right before the volcano acts up.
 * In the 90's X-Men animated series, the X-Men break into a government compound to destroy many of the files of several mutants before attempting to escape the compound. Morph says the line, "Didn't I tell you? Clear sailing all~ the way!" Cue the Sentinels marching through the trees. Quoth the Beast: "Oh dear"..
 * In a clip from the never-produced Buffy the Vampire Slayer animated series:

"Timmy: The Darkness is never coming back!"
 * In The Fairly OddParents movie "Wishology: The exciting middle part"...


 * What else could go wrong?"


 * Guess what's happening on Yugopotamia right now?

"Buckley: That'll work."
 * Camp Lazlo: One of the mini-shorts has a camper raking a big pile of leaves and saying "I can't imagine having to do that again." The plot of the short has Skip and Chip driving an out of control speedboat, so we expect the speedboat to ram into the leaves.
 * In the 2nd episode of Slacker Cats Buckley and Eddie are arguing about who will steer the car and who will do the breaks. They both decide to steer.


 * It doesn't.

"Boy: So far so good. There's no one around. I'm in luck! (the barrel of a blaster rifle appears from off-screen pointing at him)"
 * Winx Club season 3 arguably would have been better off not subverting this trope: Stella says, of saving someone from her own homerealm to get her Enchantix, "I hope I don't have to save Chimera."
 * An episode of Rocko's Modern Life has a flashback where Ed Bighead has two balls left to win a bowling game. He throws the first one away as he claims he doesn't need two balls. As he uses the final ball, the announcer says that only something terrible that would haunt him for the rest of his life would cause this to not go perfectly. Ed then accidently destroys the entire building... and still doesn't get a single pin down.
 * Space Ghost
 * "Brago". As a boy leaves an escape tunnel:

"Pilot 1: Don't worry! Nothing can penetrate our craft's armor! Brak: Fire sleep missile! (missile is fired and hits) Pilot 2: It's sleeping gas! (both pilots start choking and fall unconscious)"
 * "The Looters". As a pirate ship approaches a ship carrying a cargo of gold:

"Enemy leader: Their time is almost up. It is just a matter of seconds. (BOOM!)"
 * Jonny Quest TOS.
 * "Pirates from Below". The enemy leader is waiting for a mine attached to the Quest's underwater probe to detonate. Unfortunately for him, Race Bannon has removed the mine and let it drift up to the leader's ship.

"Race Bannon: Well, so far so good, eh doctor? Dr. Quest: And surprisingly peaceful. Turu the Terrible: (detects them and starts making its warning call, then attacks)"
 * "Turu the Terrible". Dr. Quest and Race Bannon are sitting in front of a campfire.

"DJ: It's our first challenge, how hard could it be? (cue the thousand-foot cliff) Oh sh--*bleep*"
 * "The Devil's Tower". Klaus is dive-bombing the Quests with grenades but repeatedly misses. He then yells "This time I cannot miss!" His next grenade ends up in the wing of the biplane he's flying, blowing up the wing and sending him spiraling down to his doom.
 * Total Drama Island:
 * After the Killer Bass' tent is burned down, an angry Courtney declares that things couldn't get any worse. On cue, it starts to rain.
 * From the 1st episode:

"Wendy: Let's get these things packed away before something else happens to them. Marvin: What's the rush? I mean, what else could possibly happen to them? [The heat causes the overhead automatic fire sprinklers to go on]"
 * The Magic School Bus: "PLEASE let this be a normal field trip!" "With the Frizz?" "NO WAY!"
 * In one episode of Ed, Edd 'n' Eddy, Ed's bratty sister Sarah is acting like a princess and bossing the Eds around. At one point Eddy remarks "Next thing you know, she'll want a throne!" Gilligan Cut to "Queen Sarah" sitting on a hastily cobbled-together throne, and Eddy offering "A toast, to my big fat mouth!"
 * Superfriends (1973/74) episode "Too Hot to Handle". The heat causes wax statues of the main heroes to melt, so Wendy and Marvin remove the uniforms from the statues.

"Sam: Nice. Using your powers to stuff toilet paper into a locker. He's gonna find out it's you. Danny: Have you seen his grades? (together with Tuck) Never gonna happen. Dash: Hey! This is Fenton wipe! *glares at Danny* Sam: "Never" is karma's doorbell. Ding-dong, it's for you."
 * "Your next stop is the hospital!" (Cue Doctor Feelbad being shot out of the arena by the Tormentor (Mater's monster truck wrestler alter-ego) and into a hospital)
 * Phineas and Ferb
 * In "A Hard Day's Knight", Candace agrees to dress up like a princess for their medieval fair. After a few moments she wonders "Wait a sec. Could this be one of those things that backfires horribly on me? Nah." Throughout the rest of the episode, she suffers indignity after indignity.
 * In "Doof Side of the Moon", Candace teams up with Irving's brother Albert to bust Phineas and Ferb for their latest project, a skyscraper so gigantic that it reaches to the moon. Albert assures Candace that the tower is so huge, "no force on Earth" could get rid of it before her mom comes home. This is only technically true, as Dr. Doofenshmirtz's Lunar Rotate-inator causes the moon to turn around, dragging the tower away in the process.
 * Shows up a few times in My Little Pony Friendship Is Magic:
 * In the very first episode, Twilight Sparkle brushes off Princess Celestia's advice to make some friends, saying "The fate of all Equestria doesn't depend on me making friends". By the next episode, it's clear that actually, it does.
 * In "Look Before You Sleep," Twilight ends up lecturing Applejack and Rarity after their bickering spoils Twilight's first slumber party, and ends her rant with "Is there anything else that could possibly go wrong?!" The thunderstorm outside swiftly worsens, and a lightning bolt strikes a nearby tree and threatens to send it crashing into Twilight's house.
 * In "Owl's Well that Ends Well," Spike causes trouble because of his jealousy over Owlowiscious the owl, and ends up running away from home after getting a lecture from Twilight. As he trudges, alone and feeling unloved, through the Everfree Forest, he asks himself "Can it get any worse?" It almost immediately starts raining.
 * "The Best Night Ever" pretty much starts with this, with the Mane Six indulging in a Crowd Song about how all their hopes and dreams for the Grand Galloping Gala are about to come true. Naturally, they don't. Then near the end of the episode, Celestia and Twilight Sparkle step into the main hall and find that the others have laid waste to the entire party. Thinking she's been utterly humiliated in front of her mentor, Twilight remarks "At least things can't get any worse..." A moment later, a horde of wild animals stampedes into the room with an insanely frustrated Fluttershy on their heels.
 * The original My Little Pony cartoon used this in the pilot episode's opening theme song. The lines "No sign of trouble in sight" and "May all your days be bright" prove to be tempting fate because soon after the ponies are attacked by the goons of a villain seeking to bring about The Night That Never Ends.
 * One Tom and Jerry cartoon was about a white laboratory mouse that had consumed several volatile explosives, escaped, and is threatening to destroy everything in its path once it explodes. Tom, after hearing about the exploding white mouse on the radio, encouters said mouse, but it turns out to be his archnemesis Jerry, who disguised himself as the white mouse by covering himself with flour just to give Tom a scare. Shortly after Jerry's disguise is accidentally washed off, the real white mouse arrives, at which point Tom hears over the radio that the explosives inside the mouse have deteriorated and is no longer dangerous, "the white mouse will not explode." Tom decides to triumphantly drop-kick the white mouse out the front door, causing it to explode for real and level the neighborhood.
 * Stunt Dawgs: Every time Lucky makes a comment on how things could have become worse, they DO become worse just like he said they would. He also falls victim of the trope whenever it's commented on how nothing bad has happened to him lately. One would think that, after all the times he said things could have been worse without hinting on how and nothing making things worse, he'd learn to avoid the trope.
 * South Park
 * In "Marjorine", Butters is forced by the other boys to fake his death as part of a plan to infiltrate the girls. His parents are grief-stricken, at which point a random old man suddenly shows up to try and convince Butters's Dad not to rebury him at an old Indian burial ground in a bid to bring him back. Mr. Scotch wasn't even aware of the burial ground, so all the man did was give him the idea.
 * In "Cartman's Mom is Still a Dirty Slut" the doctor notes Mephesto should be fine as long as the power doesn't go out. When it immediately does, he adds "Who didn't see that coming a mile away, huh?"
 * One episode of The Life and Times of Juniper Lee features Juniper tempting fate by commenting on how there hasn't been any magical emergencies lately despite the warnings from the more Genre Savvy Monroe.
 * All the time on Jimmy Two-Shoes, to the point where Jimmy's Catch Phrase is "Like that's even possible." It is.
 * Danny Phantom, episode Reign Storm, after Danny stuffed Dash's locker full with toilet paper: