->''Open up in there! I know you're hiding a cow!''

The often comical combination of CrankyLandlord, NosyNeighbor and SingleIssueWonk, this is a landlord who is obsessed about one extremely specific clause in the rental contract of his tenant. With this obsession in mind, he will proceed to hound said tenant relentlessly thinking that one day, he will at long last prove that the tenant is breaking the rules and therefore evict him.

Of course, most of the time the tenants ''are'' breaking the rule—the landlord is only just dumb enough that he can't actually prove it. The viewers, by contrast, are well aware of this and laugh at what a buffoon the landlord is, as the intended result of this device is HilarityEnsues.

Because of the obvious silliness inherent in this trope it never really caught on—it remains with us in pop culture today largely as parody.

Note that despite the name, this trope is more about the situation than the actual landlord—and that there could be consequences for the exposed {{Masquerade}} besides just losing a place to live.

!!Examples:

* The TropeMaker is ''ThreesCompany''. Its reputation as being a fountain for {{Idiot Plot}}s is largely based on the only part of the show anyone remembers -- that Jack has to pretend to be gay so the landlord doesn't realize the apartment is a den of sin. You'd think Janet and Chrissy would just avert this entire conflict by getting a female roommate, but it would seem that Jack's cooking really is that good.
* Parodied in ''VideoGame/SamAndMaxFreelancePolice'' Season 1, where the heroes are forced to audition for "Midtown Cowboys", a show where the titular cowboys must hide their herd (of one cow) from a landlord who constantly suspects that they're hiding a cow in their apartment. Featherly's TagLine is the page quote.
** The TagLine of the sitcom itself deserves recognition, both for being an ExpositoryThemeTune and stupidly catchy. You wouldn't think the single line "They're probably hiding a cow!" could even be MADE into an EarWorm, but the evidence suggests otherwise.
* Parodied in a strip of ''PennyArcade'' with "[[http://www.penny-arcade.com/comic/2006/11/8/ That's So Locust]]", a show about a ''GearsOfWar'' alien that must pretend to be a human woman for the purposes of this trope.
* On one ''WesternAnimation/LooneyTunes'' short, Tweety and Sylvester are being hidden by their respective owners in a hotel that doesn't allow pets. At the end, the manager asks all tenants to get rid of any animals in the premises... and is trampled by a whole zoo's worth.
* Not a landlord, but in the ''CuriousGeorge'' movie, the Man in the Yellow Hat has to hide George from his building's doorman.
* Creator/LaurelAndHardy's short ''Laughing Gravy''. Laughing Gravy is a small dog, and once again the landlord doesn't allow pets.
* In ''{{Spaced}}'', the two main characters are pretending to be in a relationship in order to rent a flat for a couple, [[spoiler: although late in the series it is revealed that "professional couple only" never was a requirement to rent the flat but a mistake from someone working at the newspaper the ad was published in.]]
* In ''BosomBuddies'', the main characters had to pretend to be women.
* ''GreenCard'': Guy and girl have to pretend to be in a relationship so she can get her dream-condo (which is couples-only), and in return he gets the titular Green Card. Somebody suspects that they're faking it, and HilarityEnsues as they have to keep the tangled web of lies from collapsing. Needless to say, they wind up ''actually'' falling in love.
* The announcer from ''MondayNightCombat'' will sometimes plug a show called "Meat the Meatsacks", a family of humans who pretend to be cyborgs so they can stay in their apartment.
* Mr. Shickadance, AceVentura's landlord, does not allow animals in his apartment complex. Ace, of course, has a whole lot of animals at his place, though he hides them quite cleverly.
* The cITV series Emu has a landlord with the same problem. Unfortunately for Emu, [[ShapedLikeItself he's an emu.]]
* On ''TheRomanHolidays'', Mr. Evictus was determined to prove that Gus Holiday had a lion in his family's apartment.
* In ''Love, Sex, and the IRS'', the landlord is obsessed with catching the main characters breaking his no female visitors policy. The play is about the two male roommates pretending one of them is a woman so they can cheat on their taxes by claiming to be a married couple. HilarityEnsues.
* [[Disney/OneHundredAndOneDalmatians Cruella De Vil]] doesn't care about how she does it as long as she evicts the Dearlys from the farm but one of her attempts included proving they had more animals than the number allowed by their contract. (101 plus the farm animals)
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