The scene where someone innocently opens the front door (frequently naked, or wearing boxers or something) and there's a raging / screaming / lusting / photographing mob on the other side. Often the intruder then slams the door and looks around with shock.
The character doesn't have to be nude — any surprise mob will do — but frequently is, simply because Naked People Are Funny. In those cases, it's related to Naked First Impression and Birthday Suit Surprise Party, and may result in a Naked Freak-Out. Inverted trope of Naked People Trapped Outside. Contrast Pushed in Front of the Audience.
- In Baccano!, one of the delinquents walks into the buffet cart armed with a knife and demands nobody move. At the same time, representatives from the two groups of mobsters turn up with guns, ordering the diners to put up their hands and get on the ground, respectively.
Diner: But... who do we listen to?
Isaac: (on the ground, holding still with his hands in the air) Why not all three?
Donny: (closing the door as he leaves) Apologies for the confusion.
- In one The Punisher MAX story, a Corrupt Corporate Executive is told that there's a bunch of journalists waiting outside the building. So he goes to meet them, reasoning that there's No Such Thing as Bad Publicity, unaware that his plan to cause random power outages in Florida to keep electricity provided by his company at a premium was leaked to the press. The next panel has him running like hell from the baying mob.
- An inverted case occurs in Justice League International #24. A group of alien conquerors had been shrunk and imprisoned in a Roach Motel, in the JLA's kitchen. The shrink ray wears off, the invaders gather some weapons, and then they bust down the kitchen door to ravage and pillage... but discover that the JLA was holding a membership drive that day.
Alien Leader: Very very quietly, pick up the door.
- In a Lighter and Softer segment of Strangers in Paradise (which turns out to be All Just a Dream, then a Dream Within a Dream), in which the usual cast are all costumed superbeings, a particularly incompetent "villain" accidentally blows up the Earth. Cut to Heaven, where a junior angel opens the Pearly Gates, panics, and goes running to tell St. Peter that "the people are here! All of Them!"
- In the Buffy the Vampire Slayer and The West Wing crossover The Morning After Xander drunkenly marries the President's Daughter and is awoken with an amnesiac hangover by knocking on the door, only to dumbly stare at the mob of Paparazzi taking his picture starkers.
"You know, I've had this nightmare before," He muttered before pinching himself and realising he was actually awake.
- In the Facing the Future Series, after Jack accidentally blacked out half of Amity Park, he was greeted by an angry mob on the front stoop, which according to him, is a common occurrence.
- At the end of The Sword in the Stone, after inadvertently being crowned king by virtue of pulling out the title blade, Wart is sitting alone in the throne room of a castle, feeling way out of his depth. So he decides to just run away, however there's no escape because outside each door he opens are huge crowds chanting "Hail King Arthur!" and "Long live the king!", blowing him back like a hurricane.
- In Hercules, the titular hero tries to leave his house only to find a Groupie Brigade at the front door, trampling him and causing him to hide behind a curtain indoors until Phil tricks them into leaving.
- In The Hunchback of Notre Dame, once Esmeralda finds herself on the run from Frollo, she takes refuge inside the titular cathedral. When she thinks it's safe to leave, she opens the door to find soldiers waiting for her (with the commander even revealing Frollo has ordered guards to be at every door), and slams it to avoid being detected.
- Monty Python's Life of Brian does it with Male Frontal Nudity, courtesy of Graham Chapman. The crowd of locals they got to fill in as the crowd is audibly shocked when they first see him.
- Big Trouble in Little China: Jack Burton opens a door and sees a mob of angry-looking mooks on the other side. He immediately slams the door shut, then turns to face the rest of the group with him. That said, considering the fact he has a machine gun, he doesn't have much trouble just shooting most of them as they try to hack the door down.
Jack: We may be trapped.
- Star Wars Episode IV: A New Hope. Han Solo running toward the room-fulla-stormtroopers (but only in the Special Edition).
- St. Trinian's, near the end. Reporters are at the school and Colin Firth's character stands nude at the window of the headmistress' room.
- Inverted in Mambo Italiano, when the family of the main character step out of the confession booths, the parents ready to proudly stand by their gay son in front of the entire congregation — but they find the church empty.
- In Notting Hill, after movie star Anna Scott spends the night at Will's, he opens his front door to a Paparazzi mob. Then Anna comes downstairs wearing only a shirt, wanting to know what Will just's seen outside. Before he can stop her, she opens the door to the Paparazzi. Then along comes Spike wearing only a pair of y-fronts, he opens the door as well, but actually finds it all rather exciting, he poses, flexes his muscles and blows a kiss before heading back inside. He then checks his scruffy, pot bellied appearance in a mirror and is perfectly pleased with it.
- This happens to the General Ripper from Day of the Dead (1985). Except it's Zombies.
- Happens when Nick rides the elevator through Madison Square Garden during the baby-Zilla outbreak in Godzilla (1998). It opens on a random floor to reveal three of the monsters rifling through popcorn before stopping to stare at Nick hungrily. Nick deadpans "Wrong floor" and quickly shuts the doors again.
- In Yankee Doodle Dandy, a young George M. Cohan performs in one of his family's plays and his character boasts "I can lick any kid my size". After the show, George opens the stage door and is greeted see a mob of boys who saw his performance and are all too eager to call his bluff.
- This happens to Frasier when he retreats to his cabin in the woods to lick his wounds after another failed relationship. Berated by his three ex-wives and his mother he attempts to flee, opening the front door to be confronted by every woman he's ever dated.He's the only person actually there. All the women are manifestations of his subconscious. Or something.
- It also happens to Frasier when he turns up to work on his birthday, walks into the broadcast studio, and bemoans his most recent romantic humiliation to Ros - in great and excoriating detail - adding snippets like having gone without sex for seven months. Ros tries to calm him down, but when he makes a snarky crack about her sex life, she smiles and gets him to talk more about his woes. Just as he is complaining about the last sex he had being with the rather dumpy unappealing woman from Accounts, Ros shouts "SURPRISE!" and twenty of their workmates - who have heard every word - leap up to wish him a happy birthday.
- The Worst Year of My Life, Again: In "April Fools Day", Simon tricks Alex into going into a darkened room to change his clothes. When he is down to his underpants, he steps through a door to get away from Mr Norris and finds that he is standing in front of the girls health class. During the loop year, Alex avoids this but instead ends up stepping through a door and finding himself in front of the school band in his underpants.
- Buffy the Vampire Slayer. Buffy does an entirely deadpan version in "Once More With Feeling". The Scoobies have started to break into song at random intervals and wonder if they're the specific target or the entire town is involved. Buffy opens the door to find an enthusiastic Crowd Song taking place outside.
Buffy: (Closing door) It's not just us.
- In Bobby Darin's "Splish Splash", the narrator walks out of his bathroom smack into a dance party.
- In Heavy Rain, after Ethan's son is kidnapped by the Origami Killer, a mob of reporters shows up outside his door almost immediately.
- The first elevator that the player character takes in System Shock delivers him to a room with half a dozen mutants standing around. When the doors open, they rush him.
- Tales of the Questor: Quentyn Quinn gets this twice. The first time, he's in his pajamas. The next time, pajamas would have been an improvement.
- Rich's ComixBlog: When Paulus, a wealthy Roman citizen, decides that he's tired of being a bachelor, he has one of his servants put up a personal ad in the Forum. It gets rather more of a response than he expected.
- Done with exactly one person in The Whiteboard, in which Doc and Roger go through MANY impressive layers of security, open up a huge door—only to find Jinx on the other side.
- The Simpsons:
Dr. Nick: "You know, it's such a nice day that I think I'll leave through the window."
- The episode where Homer has been accused of sexual harassment.
- The episode featuring Mulder and Scully. Immediately after Lisa argues that the townspeople aren't going to take three seconds of blurry video as proof that Homer met an alien, Homer opens the door to find half the town on his lawn.
- In the first episode with Dr. Nick, his meeting with the Simpsons (prior to performing heart surgery on Homer) ends with him opening the door to find a crowd of reporters waiting for him, demanding to know "What did you do with the bodies?!"
- In an early episode of the Disney revamp of Doug, Doug discovered that his new middle school (which had been constructed over the summer) wasn't quite finished as he went into a bathroom stall and began to unzip only to find that he was now standing on stage in the school auditorium filled with kids. When he pointed this out to a construction worker, the construction worker merely replied, "We're working on it."
- The Family Guy episode "Boys Do Cry" has the Griffins finding a large mob on their lawn after Stewie is mistaken for being possessed (this is one of those episodes, people!).
- One episode of South Park parodies Life of Brian but with Butters and it's set in Mexico.
- Fairly OddParents episode "Fairly Odd Baby" had Timmy finishing a shower to find out all his fairy friends are in the bathroom getting ready for Cosmo and Wanda's baby shower (which the latter is apparently semi-literal).
- Parodied on Kaeloo: In one episode, Stumpy opens the door and finds a huge mob of people who throw stuff at him... for no particular reason. He then asks why all those people are outside his door.