[[quoteright:350:[[WesternAnimation/KittyKornered http://static.tvtropes.org/pmwiki/pub/images/79_kitty_korneredmkv_snapshot_0626_20170609_153322.jpg]]]]

Picture this:
Alice and Ben are trapped in a panic room and Carl is having a nervous breakdown, Ben finds something sticking in a wall, a red box saying: "In Case of Crisis within a panic room, break glass."
Naturally Alice and Ben oblige and break the glass with the tiny hammer.

Two different events can happen at this point:

The thing inside the glass is just what Alice and Ben were looking for to have Carl calm down. The panic attack within the panic room has been averted. And there was much rejoicing.

Or, the thing turns out to be totally useless, but it doesn't stop Alice and Ben from using it anyway. [[MacGyvering Somehow]]. And it either works or just makes the situation worse.

Has nothing to do with [[InCaseOfBossFightBreakGlass breaking glass sections of a boss enemy to destroy it]].
!!In case of examples, read below:


[[folder: Literature ]]

* In ''Literature/SonicTheHedgehogInCastleRobotnik'' after a power-cut Sonic and Tails are stuck in an Elevator and after ages of trying to prize off the emergency hatch with their hands they notice a box with a spanner in it designed to remove the bolts fixing the hatch closed.


[[folder: Live Action TV ]]

* In the BBC {{Edutainment}} series ''Jigsaw'', the [[HotLine O-Phone]], which was used to summon incompetent superheroes The O-Men, was in a glass case labeled "In Emergency Break Glass". There was no hammer. The way to break the glass was to open the case, use the phone to smash the glass, then put the phone back before using it.

* In ''Series/BuffyTheVampireSlayer'', Buffy's high school actually had a fire axe in one of these emergency glass cases by the door of the school. In the episode "School Hard", Spike actually broke the glass with *the face* of one of his own minions in order to get the axe.


[[folder: Jokes ]]
* A prison has a fire alarm with the usual BigRedButton behind a glass panel labelled: IN CASE OF FIRE, BREAK. Next to it is a gun cabinet labeled: IN CASE OF JAILBREAK, FIRE.

[[folder: Tabletop Games ]]

* In ''TabletopGame/MagicTheGathering'', FlavorText for Boros Cluestone: "In case of fire, treachery, citywide riot, political upheaval, or worldwide societal collapse, break glass."


[[folder: Video Games ]]

* In ''VideoGame/IcarusNeeds'', a key needed to progress is found in a box with a sign next to it that reads as follows: ''Break Glass In Need of Key''.
* ''VideoGame/ThiefII'' features an [[YeOldeButcheredeEnglishe amusing variant]]: "In time of peril, breaketh glass."
* ''VideoGame/ZorkGrandInquisitor'' has a glass case marked, "In case of adventure, break glass." It contains a sword, map, and hammer. You can't just take the sword and map; you have to open the case, take the hammer, close the case, [[ExactWords break the glass]], ''then'' take the items.
* At the very beginning of ''VideoGame/{{Unreal|I}}'' there's a glass box with two medpacks inside of it below the end of the Vortex Rikers level, with the "Break Glass" text above it.


[[folder:Web Animation]]
* In the ''WebAnimation/DoodleToons'' episode "Fast Food Follies", Pip and Goldie feed a customer a burger that causes him to breathe flames[[note]]Goldie wanted to put tobacco in the burgers to get customers addicted, but she accidentally put tobasco in it instead[[/note]]. To extinguish the flames, Goldie grabs an axe from in a nearby box labeled "In case of fire, break glass."

[[folder: Web Comics ]]

* ''Webcomic/{{Spinnerette}}'' once showed such a box in the background of Dr. Lambha's lab, labeled "In case of [[CuteClumsyGirl Heather]], break glass".
* According to xkcd Blog/WhatIf ''[[http://what-if.xkcd.com/48/ Sunset On The British Empire]]'', the interior walls of Buckingham Palace have numerous 'In Case Of Emergency, Break Glass' boxes. [[SpotOfTea Each one has a cup of tea in it.]]


[[folder: Western Animation ]]

* In ''WesternAnimation/EdEddNEddysBigPictureShow'', the Eds are trying to find a way out of Eddy's Brother's room when this happens:
-->'''Ed:''' Look! ''(showing Edd and Eddy a red box)''
-->'''Edd:''' "In Case of Movie, break glass"?
-->'''Eddy:''' Bingo! ''(breaks the glass with the tiny hammer'') My bro's [[CrazyPrepared always prepared]]! ''(proceeds to reach for...a peanut; Eddy starts looking confused)'' A peanut?
-->'''Ed:''' [[SelfDeprecation Cheap movie.]]
** Fortunately, the peanut contained the key to Eddy's Brother's car. The key did open the doors, but it failed to start up the car indicating there was no gas in it, or the battery died, etc.
* ''WesternAnimation/LooneyTunes''
** DoubleSubverted in ''The Hardship of Miles Standish'', John Aldin (played by Elmer Fudd) finds a glass case reading "In Case of Indians, Break Glass". He simply lifts the glass up and takes out the gun behind it...''then'' he breaks the glass.
** In ''Kitty Kornered'', Porky takes out a gun from behind glass when he thinks he's being attacked by men from Mars.
** And again in ''Bewitched Bunny'', when WesternAnimation/BugsBunny finds himself cornered by Witch Hazel in her house, he finds a conveniently-placed wall-mounted box labeled "MAGIC POWDER" with the glass front reading "IN CASE OF EMERGENCY BREAK GLASS" complete with a little hammer on a chain attached to it. Bugs uses it, revealing a sort of small bomb or grenade which he hurls at Hazel, turning her into a female rabbit!
** And finally, "To Hare Is Human." Bugs has another mounted box around his bed marked ''In case of coyote, break glass.'' Inside the box is a BananaPeel, which he throws in front of the ladder that serves as the stairway to his hole. Once the coyote steps on the peel, his next stop is the Coyote Disposal and a date with gravity.
* ''WesternAnimation/{{Brickleberry}}'': In Case of Connie, Break Glass.
* In the ''WesternAnimation/FamilyGuy'' episode "When You Wish Upon a Weinstein", when a group of nuns get word of Peter entering a synagogue, they rush toward a case reading "In Case Of Heresy, Break Glass" and smash it to reveal rulers behind it.
* In ''WesternAnimation/TheSimpsons'' Treehouse of Horror V, Homer goes insane after being forced to go a long time without TV or beer. Marge runs across a glass case that says, "In Case of Spousal Insanity, Break Glass", where she finds a baseball bat.
* An episode of ''WesternAnimation/CatDog'' has the titular character travel into an exotic land to suddenly steal the throne from [[CorruptCorporateExecutive Rancid Rabbit]]. Rancid goes back to a case that says, "In Case of Emergency, Break Grass".
* In the ''WesternAnimation/ReBoot'' episode "Nullzilla", Phong has an extended CrazyPrepared-plan for a godzilla-sized null monster ramapging through the city. This includes a large weapon in a case that reads "IN CASE OF GIANT NULL MONSTER THREATENING CITY -- BREAK GLASS".
* In the ''WesternAnimation/CasperTheFriendlyGhost'' short "Ghost Writers", there is a glass case at the Paramount cartoon studio reading "In Case If You're Fired--" [[BlackComedy and containing]] [[DrivenToSuicide a gun]].
* In WesternAnimation/CloudyWithAChanceOfMeatballs2, [[CorruptCorporateExecutive Chester]] [[BigBad V]] has a box next to the [[spoiler:FLDSMDFR]] that reads IN CASE PLAN FAILS BREAK GLASS. That box contains a large hammer used to.... break the glass containing the [[spoiler:FLDSMDFR]] so he can grab it and escape.