The heroes just had the adventure of their lives and are finally relaxing after all perils they have faced. Suddenly, there's a knock on the door, or the phone rings or some indication of Here We Go Again as they find themselves apparently about to find themselves in more adventure.
But in this Ending Trope, the tired or alarmed heroes respond, "Forget it! We are not going through that again!" as they slam the door on their visitor, or hang up or go back to bed or run away. They have had all the adventure they could want and now they just want some peace and quiet.
This is a variant of Refusal of the Call, but only when it is at the end of the story and the call is clearly repeating the adventure they just experienced.
For the opposite, see Here We Go Again or And the Adventure Continues.
Played with: In one Smurfs comic, one of the Smurfs dreams of travelling to outer space in a spaceship he builds. Not wanting to disappoint him, Papa Smurf concocts a convoluted plan to drug him and make him thinks he's travelled to another planet populated by Smurflike humanoids called Swoofs. So convoluted, in fact, that after Astrosmurf "returns" (after drinking a similarly drugged beverage given to him by the Swoofs), another Smurf contemplates on doing the same thing, only to be overridden by the rest of the village, who practically yell the trope name at him.
At the end of the fanfic Fanfic Is Crapsack, the "trollfic," a diabolical entity embodying horrible fan fiction, tries to make a comeback as a minuscule, slowly-growing glob hiding in the cracks in the floorboards of the Ponyville Library. Twilight Sparkle drives it out of the floor by pouring boiling coffee on it, then destroys it by smacking it with a copy of Diana Hackney's Rules for Writers. It pops like a cyst, leaving behind a little spot of soot.
In Freaky Friday (2003), the titular "Freaky Friday" Flip is caused when an older Chinese woman (the mother of the owner of a Chinese restaurant) gives the characters magic fortune cookies. At the end, the same Chinese restaurant is catering the big wedding, and the restaurant owner tackles her mother to prevent her from giving the magic fortune cookies to two different characters.
At the end of the Boris and Natasha movie, Boris blows up a crate of time travelling MacGuffins that individually reverse time for ten seconds when damaged. This causes time to reset to the beginning of the movie. Then they decide that they don't want to go through all the grief they went through over the course of the film a second time, so instead of delivering a priceless treasure to Fearless Leader and starting the plot, they sell the treasure and retire to Tahiti.
At the end of Bored of the Rings, Frito, having returned to his digs, is visited by a mysterious stranger who thinks he's the kind of person that takes quests. He slams the door, locks it and swallows the key.
In the film he goes further; he snaps the wand in two and throws it into an abyss.
In the short story "Chivalry" by Neil Gaiman, a little old lady finds the Holy Grail going cheap in a second-hand shop, and buys it because she thinks it'll look nice on her mantelpiece. Much excitement ensues. At the end of the story, she's back in the same shop, and finds an exotic oil lamp but decides, on reflection, to leave it where it is.
During Galaxy of Fear, DV-9 goes on several adventures but ultimately puts himself on a bus, tired of the constant danger and excitement. He reappears in the last book and helps the others, for a moment, but declines to leave with them for this reason.
In the epilogue of John Dies at the End, John and Dave are trying to have a game of basketball when they are drawn into another parallel Earth and asked to save it from a monster invasion. They find an excuse to leave, and let some teenagers with attitude handle it instead.
The Suite Life on Deck episode "Maddie On Deck" is about Maddie catching the attentions of a prince, who turns out to be an eight year old boy. The prince proceeds to attempt to force her into marriage. In the end, she has caught the attentions of the prince's brother, Timmy, and has a We Are Not Going Through That Again moment. As it turns out, Timmy was actually a hot guy around the same age as her.
In The Monkees episode "Don't Look a Gift Horse in the Mouth," the band, having just finished ensuring that a horse that they were stuck with by a kid got a good home, are approached on the beach by another kid who just happened to be looking to get rid of a camel. The instant they see this, the Monkees run away as fast as they can before the kid can say anything and given that the show cuts to a music sequence with them on a dune buggy and motorcycles, they are apparently really serious about avoiding getting stuck with another beast of burden.
Done repeatedly in a single episode of The Cosby Show. It's Thanksgiving and there's a huge storm raging outside. Despite that, Clair keeps sending Cliff to get stuff that she'd forgotten to get ahead of time. Each time he returns from the store, the first thing he says is "I'm not going back out there". He keeps going back out there.
In an episode of A.N.T. Farm, the ANTs plan a heist to steal a painting that Fletcher made and some guy is claiming credit for. The heist is a success; however, Fletcher puts an exact replica of the painting in its place rendering the whole thing pointless. When he tries to reform the group and give a rundown of their roles again, Chyna stops him.
In Peanuts, Charlie Brown is returning home from the best summer camp visit of his life helping and gaining a new friend. As his bus pulls out, he sees a new crop of kids who could use some help, but he sits back with a satisfied smile and says "Let them go, I've done my hitch."
The ending of Telltale Games's Back to the Future game series. Upon finally arriving home, Doc and Marty are visited by Marty's future self. And then two more future Martys. They all insist they come back with them into the future to fix the timeline. Doc and Marty simply get back into their own DeLorean and drive away, leaving the three alternates to fight amongst themselves.
The Flintstones episode "Dr. Sinister" where Fred and Barney just come back after being shanghaied into a terrifying James Bond like adventure with Madame Yes. When Yes appears on their front door at the end, they slam the door and begin boarding it up in fright.
In the World's Greatest Super Friends episode, "Lord Of Middle Earth," Gleek realizes his fantastic adventure was just a dream. But just as he relaxes, he sees a shadowy figure that looks like the same kind of Troll that was in his dream adventure. Rather than investigate, Gleek simply shrugs and goes back to sleep.
On TaleSpin, after Baloo and Louie are through helping a scavenger look for treasure, a woman on the streets shows them a map and asks if they're interested in looking for some treasure. The two exchange glances and then promptly rip the map over her head, and leave.
The Penguins of Madagascar, "Treasure of the Golden Squirrel". After the penguins had been involved in an exciting treasure hunt involving a cursed artifact, a pigeon gives them a silver feather and instruct them to guard it with their lives. Skipper is excited at the prospect of a second adventure, but when he turns around he finds that the others have left, wanting no part in it.
In an episode of Family Guy, Stewie and Brian have lied to Loretta, saying that Cleveland wants to get back together with her, in order to allow Brian a chance with his ex (Cleveland's then-current girlfriend.) Loretta comes to Cleveland, saying that she's sorry she cheated on him and does want them to be a family again...and he considers it, though he doesn't want to give up Carolyn. When he finally does talk to Loretta, he tells her that the time they shared was special and he does care about her, but also that he's moved onto a new chapter of his life and that she should do so too.
In a later episode when Joe's son Kevin comes to Thanksgiving after faking his death in Iraq, the episode ends with another Kevin saying the first one is an impostor. Peter lampshades this saying that there's no more time left in the episode.
The Earthworm Jim episode "Hyper Psy-Crow" almost has a Here We Go Again ending, but when Jim comes in and complains about it (even using this exact term), they decide to Drop The Cow instead. The dialog:
Psy-crow: Oh well. Here we go again! EJ: Hold it! We are not going to do a "Here we go again" ending on my show! (after Psy-crow asks what they'll do instead) EJ: Take a guess. Psy-crow: Uh... The cow thing? (a cow falls on Psy-crow)
In the last episode of The Super Hero Squad Show, when the Infinity Sword is broken into fractals again, Falcon states that he's not hunting them all down again.
The Marshall Plan, the creation of the United Nations, and especially the new West German and Japanese constitutions were promoted with a view to preventing another World War. It appears to have worked.
World War One, back when it was still called The Great War, was sometimes referred to as "The War to End All Wars" because everyone thought that really was going to be it, that everyone's disputes would be settled and no one would ever have reason to wage war ever again. Too bad World War Two was still to come.