History Main / YourDoorWasOpen

* ''Series/BuffyTheVampireSlayer'': This becomes a RunningGag in Season 4 when different characters keep wandering into Giles' home, with him lampshading by saying "I thought I locked that door." or "Now, I know I locked the door that time!"

** At the end of "Everest Was Also Conquered", Bodie and Doyle gleefully tell a [[SmugSnake smug]] [[CorruptCorporateExecutive businessman]] they've come to arrest that his ''[[TrespassingToTalk window]]'' was open!

** Subverted in one episode. Kramer's drop in style involves sliding through the doorway as he opens it in a practiced motion. In one episode, Jerry locks his door, causing Kramer to slam into it.

* ''Anime/{{Pokemon}}'' had an episode where Professor Oak suddenly appears in the "new character of the week"'s family business (a greenhouse) to provide plot-important information; no one bats an eye.

* ''[[http://ks.renai.us/viewtopic.php?f=52&t=2708#p45716 From Shizune's Perspective]]'', a ''VisualNovel/KatawaShoujo'' fic, has an example in which the intruder is also the one who forgot to lock her door. Shizune walks into her own unlocked room to find Misha and Hisao [[spoiler:having sex with each other; Shizune had no idea that they were in a relationship at all]].

* A while back, UsefulNotes/TwinCities police officers had a campaign where they'd go up to houses during the night, and leave warnings if the door was unlocked. Eventually, this led to a pair of officers not-quite-legally entering a house and waking up a homeowner to politely tell him that he is [[http://www.freerepublic.com/focus/f-news/2033838/posts an idiot for not locking his doors, leaving his garage open, and leaving the keys in his ignition]].

* Happens all the time in ''Manga/KannagiCrazyShrineMaidens''. The protagonist stopped locking his door after Nagi got to live with him (instead of, you know, giving her spare keys), and didn't lock the door when they both were inside as well. If people are ringing the bell at all, it is just that they are polite.

* Door locks are nonexistent in ''Manga/ToLoveRu''. None. Zilch. Nada. Not on bedroom doors, not on the school roof, and definitely not on the washrooms, which results in many AccidentalPervert situations in the name of {{Fanservice}} and Rito getting the crap kicked out of him by pissed-off girls.
* In ''Manga/FairyTail'', every guild member walks into Lucy's home as if they owned it, especially when she's sleeping or taking a shower/bath, sometimes together with her. HilarityEnsues because Lucy is not amused.
* Agent Smith in ''Manga/MonsterMusume'' is fond of this. Her first appreance being showing up behind Kimihito in his kitchen.
* Brought up in the manga version of ''Anime/NeonGenesisEvangelion''. In one chapter, Misato is shown taking a shower with the apartment door left unlocked. Shinji walks in, realizes what's happening, turns beet red, and thinks to himself, "That's not safe! ''Anyone'' could walk in!"

* Subverted by Rorschach in ''ComicBook/{{Watchmen}}'' as it is obvious that he broke the door and then waited for the owner to come home. Rorschach then criticizes the owner for installing such a cheap, flimsy [[MeaningfulName Gordian Knot-brand]] lock.
* In one issue of ''ComicBook/TheSimpsons'', Homer and Comic Book Guy are charged with obscenity. While the family is watching the newscast on TV, Comic Book Guy shows up, and when asked how he got into their living room, he launches into a rambling speech involving time-travel, teleportation, and other sci-fi elements...before admitting that their door was open.

* The ''VisualNovel/KatawaShoujo'' fic ''[[http://ks.renai.us/viewtopic.php?f=52&t=2708#p45716 From Shizune's Perspective]]'' has an example in which the intruder is also the one who forgot to lock her door. Shizune walks into her own unlocked room to find Misha and Hisao [[spoiler:having sex with each other; Shizune had no idea that they were in a relationship at all]].

[[folder:Film]]
* Parodied in ''Film/NotAnotherTeenMovie'':

* In ''WesternAnimation/TheJetsons'' movie, the Furbalows do this after their daughter follows Elroy home. It's downplayed a bit in that they enter the room only after announcing their presence from the open doorway.
* In the 1997 informative video ''Film/TheKidsGuideToTheInternet'' Lisa and Andrew simply walk in to the scene. They were evidently dropped off by their mother, and the Jamisons have an open door policy because there was no knocking, doorbell or "Hello?"
* In ''Film/RearWindow'', Lisa breaks into the suspected murderer's apartment and is caught by him when he returns. It's not clear what excuses she gives him for being in his home, but one of them is apparently "The door was open. . .", indicating that she's claiming that she thought someone inside might need help.

* ''Literature/LittleWomen'': Aunt March frequently barges in, [[HypocriticalHumor complaining about how her family doesn't lock their door.]]

[[folder:Live Action TV]]
* On ''Series/IDreamOfJeannie'', Dr. Bellows would frequently enter Major Nelson's house without even knocking. Apparently being in the US Air Force means your superior officer can walk in your front door any time he likes.
* In Series/BabylonFive, Londo returned to his quarters to see that his door was open. G'Kar was waiting inside, wanting to purchase a certain plant for a religious ceremony.
* Star Labs in the ''Series/TheFlash2014'' probably has revolving doors at the front and back of the building. Sisco lampshades the lack of security in the season 2 premiere, acknowledging that people could just stroll in whenever they wanted.
* Virtually any American {{Sitcom}}, particularly noticeable in ''Series/{{Friends}}''. This tendency is {{Lampshaded}} in ''Series/{{Coupling}}'' season 4.
** It was lampshaded a few times in ''Series/{{Friends}}'' too: when Monica and Chandler agree to move in together, Monica tells him to lock the door to her apartment, then unlock it again for the first time as her roommate. Chandler replies: "The door hasn't been locked in five years, but sure." Then in the final episode, Monica and Chandler leave their keys on the counter as they leave the apartment... and then so do all the others.
** Kramer from ''Series/{{Seinfeld}}'' and Charley from ''Series/EmptyNest'' were both based almost entirely off of this trope-- both neighbors to the main characters, both enter without knocking in a distinctive manner, and both steal food from the main character's fridge.
*** Although on ''Seinfeld'' it was averted with every other character, Jerry has to buzz George and Elaine into the building every time they come over whereas Kramer lives across the hall from Jerry.
*** Subverted in one episode. Kramer's drop in style involved sliding through the doorway as he opened it in a practiced motion. In one episode, Jerry actually locks his door causing Kramer to slam into it.
*** In another episode, Elaine goes to visit her boyfriend and is surprised to find his door open. He claims "I like to encourage intruders".
*** In "The Robbery" -- the third episode of the series and the first instance of Kramer's slide -- Jerry discovers his apartment was robbed because Kramer left the door open after borrowing a utensil, intending to bring it back right away but getting distracted by a TV show. Jerry doesn't have insurance.
---->'''Kramer:''' How could you not have insurance?!\\
'''Jerry:''' Because, I spent all my money on the Clapco D29. It's the most impenetrable lock on the market today. It has only ''one'' design flaw: the ''door''... ''[closes door]'' ...[[SuddenlyShouting MUST BE]] ''[[SuddenlyShouting CLOSED!]]''
** Lampshaded on ''Series/MarriedWithChildren'' when Marcy walked in through the Bundy's door and said, "Why do you keep your door unlocked. Any crazed killer could come in and murder you?" Al's reply? "Yeah, like I ever get what I want."
*** In the earlier seasons, Steve and Marcy would have the courtesy to ring the doorbell when coming over to the Bundy's residence. After Steve left her, Marcy would let herself in whenever the scene called for her to be there.
* The show ''Series/ItTakesAThief2005'' has two ex-cons who, with the owner's permission, and while videotaped, try to steal (then later return) things from the owner's house. They often gain access through unlocked doors. Then they help the owners improve their home security and try again some time later.
* Parodied in ''Series/BirdsOfAFeather'', where Dorien had a habit of just walking into her neighbors' house. At one point, they locked the door. She smashed the glass panel next to the lock, undid it, and came in anyway, while they were ''standing right there staring at her in disbelief''.
* ''Series/BuffyTheVampireSlayer''. Becomes a RunningGag in Season 4 when different characters keep wandering into Giles' home, with him lampshading by saying "I thought I locked that door." or "Now, I know I locked the door that time!"
* When Series/{{Angel}} becomes CEO of the supernatural law firm Wolfram & Hart, Eve (his Liaison to the Senior Partners) keeps doing this to upstage him, except for one episode when she does this [[CovertPervert while Angel is taking a shower]]. At first Eve claims his door was open, then changes to "your door was unlocked". Then Eve admits she has a key. Which Angel wordlessly takes off her.
* This was a RunningGag on ''Series/EvenStevens'' with the character Beans. Lampshaded in TheMovie when the family is sitting down to dinner and Beans pops up, prompting [[TheDitz Donny]] to say "This kid is starting to freak me out" and another character to propose changing the locks. Possibly averted by the fact that ''everyone'' found Beans weird and unsettling.
* Jonathan was occasionally able to make use of this ability in Series/HighwayToHeaven to gain access to any difficult-to-reach character who was part of his assignment for the week.
** Justified in his case, since he was an angel and wasn't likely to be stopped by a locked door.
* ''Series/{{Smallville}}'' - this happens so often that characters {{Lampshade}} it. Particularly nonsensical for Lex Luthor, who has cameras and security systems. This is a JustifiedTrope when Clark is involved, but not when it's, for example, Jimmy Olsen.
* From ''Series/StargateSG1'':
-->'''Jackson:''' Jack?\\
'''O'Neill:''' He's a barber.\\
'''Jackson:''' Broke into your house?\\
'''O'Neill:''' Yeah...\\
'''Jackson:''' Second week in a row.\\
'''O'Neill:''' Mm-hmm.\\
'''Jackson:''' Alarm.\\
'''O'Neill:''' I'm thinking "dog".\\
'''Joe Spencer:''' You could try locking your front door.
* Steve Urkel on ''Series/FamilyMatters'' treated the Winslow house as his own. When asked at one point why he never knocks, he said that if he did, no one would let him in.
* ''Series/{{NCIS}}'', any character that wants to speak to Gibbs when he's at home can, due to the fact that his front door doesn't even have a lock.
* Done frequently on ''Series/TheSecretLifeOfTheAmericanTeenager''. A notable example happened in the season one episode, "Maybe Baby" when nearly every regular character ended up in Amy's house, arriving in groups of two or three, just to tell her they would support her if she wanted to keep her baby. They have gotten better about it in later seasons (meaning it's more common to see people actually knock on the door and wait for someone to answer it) but it's not completely absent.
* ''Series/MythQuest'': Philthy walks in on people a lot, often coming surprisingly close to learning about TheMasquerade. Cleo asks him if he ever knocks and his response is, "Hmm, no."
* ''Series/MillionYenWomen'': The women were invited into Shin's house without Shin's knowledge. The first to arrive, Hitomi, just let herself in while Shin was out, causing him to be completely freaked out when he came home. Hitomi herself points out that he should lock his door.

* ''Series/{{Phoenix}}''. In "Blessed are the Peace Makers", the Major Crimes Squad raid the headquarters of an outlaw biker gang in the middle of the night. Senior Sergeant Renford raises a huge mallet to smash the door down...then tries the handle and realises the door's unlocked, enabling them to sneak in and catch the bikers asleep.

[[folder:Newspaper Comics]]
* A ''Magazine/TheNewYorker'' cartoon from 2002 has two agents walk into someone's house saying "We're from Homeland Security. You left your door unlocked."
* In one ''ComicStrip/{{Zits}}'' comic, Connie comes downstairs in the morning to find Pierce drinking coffee in her dining room. They had invited him to dinner that day, but he decided to show up early.
-->'''Connie:''' Was our door unlocked?
-->'''Pierce:''' Not at first.
[[/folder]]

* Though most [=RPG=]s use this, ''VideoGame/GoldenSun'' gets a special note for actually having bandits lampshade this and take advantage of a town's lack of home security to loot from the mayor, several homes, one of the protagonists and a holy sanctum.
* In the opening cutscene of ''VideoGame/SuperPaperMario'', Mario and Luigi simply walk into Bowser's castle.

* Specifically regarding [=RPG=]s, for those that might not be familiar with it, many will allow you as the playable character to simply wander into anyone's home that you want. For example, many of the ''Franchise/FinalFantasy'' titles will allow this, and ''VideoGame/FinalFantasyVII'' is a particularly strong example - just about any random house in any town you visit can be entered at will, and you're free to chat with whoever's in there without, for the most part, them seeming to mind your player character's (usually Cloud's) presence at all.
* Lampshaded in ''VideoGame/KnightsOfTheOldRepublicII''. If you visit one apartment on Citadel Station, the resident will come in as soon as the player starts opening storage containers, and he shouts at them for stealing his stuff.
* ''VideoGame/Persona5'' sees the protagonist and his friends sneak into his guardian Sojiro Sakura's home to find Futaba Sakura. When [[PapaWolf Sojiro]] rushes inside later at the sound of Futaba screaming, Ann explains immediately that the front door was unlocked--which it was. Sojiro sighes, commenting that it's happened before, considering how he's getting old.
* The ''VideoGame/TrailsSeries'' uses this in a similar way to the ''Final Fantasy'' franchise. All of the games in this franchise are full of apartments and private homes. Your characters can pretty much just walk freely into any of them and chat up the residents, none of whom seem even the slightest bit bothered or surprised by the sudden presence of these people in their homes.

* ''WebAnimation/HomestarRunner'': The title character finds his way into Strong Bad's house on many, ''many'' occasions. Even though Strong Bad is outspoken in his hatred of him. [[http://www.homestarrunner.com/sbemailahundred.html At one point]] Homestar {{lampshade}}d it by questioning whether he actually ''lived'' in Strong Bad's house.

[[folder:Web Novel]]
* ''Literature/CanYouSpareAQuarter'': Neither Graham nor the other people on Valdez Island lock their houses, as it's an isolated island.
[[/folder]]

%% [[folder:Webcomics]]
%% * ''Webcomic/MinionsAtWork'': [[http://www.minionsatwork.com/2007/08/minions-77-great-80s-hero.html Unlocked at any rate.]]
%% [[/folder]]

* In ''WesternAnimation/TeenTitansGo'', Robin left the door open while cave-sitting the Batcave while Batman was out, and the remaining Titans just waltzed on in.
* In an episode of ''WesternAnimation/AquaTeenHungerForce'', when Dr. Weird's latest invention is stolen away through the hole caused by his ''previous'' invention.

* Done in ''Franchise/WinnieThePooh''.
** The eponymous Pooh has set up an elaborate, if hasty furniture barricade in front of his Front door and is patrolling it with a popgun rifle. He hears a knock and is nervously trying to ascertain the identities of his friends knocking at the door, when Tigger bounces on the bear, with Rabbit and Piglet walking in behind.
--->'''Pooh:''' How did you get past my Hunny-napper traps?\\
'''Rabbit:''' Your back door was open.\\
'''Pooh:''' Oh!
** "Your back door was open" is used several times in the animated movies & episodes.
* {{Lampshaded}} in ''WesternAnimation/Ben10AlienForce'' once when Kevin just shows up in Ben's room.

* In an early episode of ''WesternAnimation/TheSimpsons'', when Homer gets an illegal cable hookup the cable guy comes by later with some stolen merchandise he thinks Homer might be interested in. "Your door wasn't locked in any ''serious'' way."
** In [[Recap/TheSimpsonsS9E9RealtyBites Reality Bites]], the Springfield Police auction off the gate to Johnny D's mansion.

* In one episode of ''WesternAnimation/PhineasAndFerb'', Doofenshmirtz sets a trap for Perry the Platypus when he comes in, only for Perry to come in through the backdoor which the maid left unlocked.
* The ''[[WesternAnimation/DragonsRidersOfBerk Dragons: Race to the Edge]]'' episode "Family on the Edge" starts with Hiccup opening the door to his hut to find Dagur (his ArchEnemy until their recent EnemyMine episode earlier this season) just casually hanging out in his room.

* A while back, UsefulNotes/TwinCities police officers had a campaign where they'd go up to houses during the night, and leave warnings if the door was unlocked. Eventually, this led to a pair of officers not-quite-legally entering a house and waking up a homeowner to politely tell him that he is [[http://www.freerepublic.com/focus/f-news/2033838/posts an idiot for not locking his doors, leaving his garage open, and leaving the keys in his ignition.]]

* Lampshaed in ''VideoGame/StarWarsKnightsOfTheOldRepublicII''. If you visit one apartment on Citadel Station, the resident will come in as soon as the player starts opening storage containers, and he shouts at them for stealing his stuff.

** Justified in his case, since he was an angel and didn't truly need to use the door.

* Jonathan was occasional able to make use of this ability in Series/HighwayToHeaven to gain access to any difficult-to-reach character who was part of his assignment

* Happens all the time in Manga/KannagiCrazyShrineMaidens. The protagonist stopped locking his door after Nagi got to live with him (instead of, you know, giving her spare keys), and didn't lock the door when they both were inside as well. If people are ringing the bell at all, it is just that they are polite.
* ''Manga/MahouSenseiNegima:'' Negi wanders into Chisame's apartment while she's dressed as her alter-ego "Chiu-chan".
* ''{{Anime/Pokemon}}'' had an episode where Professor Oak suddenly appears in the "new character of the week"'s family business (a greenhouse) to provide plot-important information; no one bats an eye.

* Agent Smith in ''Manga/DailyLifeWithMonsterGirl'' is fond of this. Her first appreance being showing up behind Kimihito in his kitchen.

[[folder:Fan Fiction]]

* Virtually any American SitCom, particularly noticeable in ''Series/{{Friends}}''. This tendency is {{Lampshaded}} in ''Series/{{Coupling}}'' season 4.

%% [[folder:Web Comics]]
%% * ''WebComic/MinionsAtWork'': [[http://www.minionsatwork.com/2007/08/minions-77-great-80s-hero.html Unlocked at any rate.]]

* In one ''Anime/MaiHime'' Shizuru/Natsuki fan comic, Shizuru lets herself into Natsuki's unlocked room while she's asleep, and Natsuki finds her sitting across her table from her when she wakes up. Shizuru chides her for leaving her door unlocked, apparently from being tired from all the make-up work she's been doing, and Natsuki promises to be more careful in the future, but notes that no one out there is more "dangerous" than Shizuru.

* Happens all the time in Manga/{{Kannagi}}. The protagonist stopped locking his door after Nagi got to live with him (instead of, you know, giving her spare keys), and didn't lock the door when they both were inside as well. If people are ringing the bell at all, it is just that they are polite.

*** In "The Robbery" -- the third episode of the series and the first instance of Kramer's slide -- Jerry discovers his apartment was robbed because Kramer left the door open after borrowing a utensil. Jerry doesn't have insurance.
---->'''Kramer:''' How could you not have insurance?\\
'''Jerry:''' Because, I spent all my money on the Clapco D29. It's the most impenetrable lock on the market today. It has only one design flaw: the door ''[closes door]'' MUST BE CLOSED!

* ''WesternAnimation/TheSimpsons'': In [[Recap/TheSimpsonsS9E9RealtyBites Reality Bites]], the Springfield Police auction off the gate to Johnny D's mansion.
-->'''Chief Wiggum:''' These prestigious, wrought iron security gates are bulletproof, bombproof and battering ram-resistant. Now...\\
'''Principal Skinner:''' Then what happened to Johnny D?\\
'''Chief Wiggum:''' He forgot to lock them.

--->'''Janey:''' How'd you get in here? The door was bolted
--->'''Jake:''' There's a giant hole in the side of your house.

---> '''Ponyboy:''' *Wakes up, walks downstairs and sees Tim Shepard on the couch reading a newspaper. He obviously came in while everyone was asleep.* ...Hi, Tim.
---> '''Tim:''' *Without looking up.* Hi.
---> '''Ponyboy:''' Can I..get you some breakfast?
---> '''Tim:''' Nope. *Folds up newspaper and walks out of house.*

--->'''Kramer:''' How could you not have insurance?
--->'''Jerry:''' Because, I spent all my money on the Clapco D29. It's the most impenetrable lock on the market today. It has only one design flaw: the door ''[closes door]'' MUST BE CLOSED!

-->'''Jackson''': Jack?\\
'''O'Neill''': He's a barber.\\
'''Jackson''': Broke into your house?\\
'''O'Neill''': Yeah...\\
'''Jackson''': Second week in a row.\\
'''O'Neill''': Mm-hmm.\\
'''Jackson''': Alarm.\\
'''O'Neill''': I'm thinking "dog".\\
'''Joe Spencer''': You could try locking your front door.

-->'''Bowser''': What? My front gate was open?! How many times have I told those idiots?! If you're the last in, LOCK THE GATE!

[[folder: Web Animation]]

-->'''Strong Bad''': Is there like a sign on my door that says, "Wanted: Everyone I hate. Inquire within"?
-->'''King of Town''': [randomly walking in] I didn't see one.

-->'''Dr. Weird:''' (''standing in front of a gaping hole in the wall"") Who could have penetrated my impenetrable fortress?

** The eponymous Pooh has set up an elaborate, if hasty furniture barricade in front of his Front door and is patrolling it with a popgun rifle. He hears a knock and is nervously trying to ascertain the identities of his friends knocking at the door, when Tigger bounces the bear, with Rabbit and Piglet walking in behind.

'''Pooh:''': Oh!

-->'''Chief Wiggam:''' These prestigious, wrought iron security gates are bulletproof, bombproof and battering ram-resistant. Now...
-->'''Principal Skinner:''' Then what happened to Johnny D?
-->'''Chief Wiggam:''' He forgot to lock them.

** Kramer from ''Series/{{Seinfeld}}'' and Charley from ''Empty Nest'' were both based almost entirely off of this trope-- both neighbors to the main characters, both enter without knocking in a distinctive manner, and both steal food from the main character's fridge.

* ''WesternAnimation/TheSimpsons'': The Springfield Police auction off the gate to Johnny D's mansion.

* ''Series/{{Lucifer}}'':