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1* Since 2007, the Science Museum in London has had an exhibit called [[https://www.youtube.com/watch?v=Hx4mB_IFHtU "DO NOT TOUCH"]]. A large pole with a barred-off bare metal waist is surrounded by brain-searing yellow warning signs, proximity-sensor klaxons, and screens telling patrons that the pole will give them an electric shock. You can't help but touch it! And yes, you do get an electric shock if you touch it.
2* This Place is '''Not''' a Place of Honor: The U.S. Department of Energy is designing monuments that warn future visitors — including ones living tens of thousands of years in the future when the authority of the U.S. government is a distant memory and all current human languages are no longer understood — away from nuclear waste disposal sites such as Yucca Mountain and the Waste Isolation Pilot Plant. The ideas they've come up with are [[http://www.damninteresting.com/?p=160 fascinating]] — but not one of them has managed to avert the site being Schmuck Bait of the highest caliber. To their credit, they're well aware that anything they design is potential Schmuck Bait, and they're actively working to minimize the bait factor.
3** Creator/JerryPournelle once suggested an elegant solution: Put the waste in one of the areas of desert that are ''already'' radioactive because nuclear weapons were tested there. Surround it with miles of fence and lots of signs that say IF YOU CROSS THIS FENCE, YOU WILL DIE. Some people will do it anyway. "Think of it as evolution in action. Average human intelligence goes up by a fraction of a percent."
4*** Another proposed option which would make any warning stand out like a sore thumb to all other "pharaoh's curse" warnings: End the warning with [[MyGodWhatHaveIDone an apology and/or plea for forgiveness,]] which any "Don't you dare take my gold!" warning would intentionally omit.
5** The [[https://en.wikipedia.org/wiki/Waste_Isolation_Pilot_Plant#Awareness_triggers current plan]] is largely utilitarian, with a combination of straightforward basic warnings and more detailed factual information, with the priority being to ensure the nature of the danger is conveyed accurately (something that many of the more fanciful proposals seem to forget, particularly since the waste in the Waste Isolation Pilot Plant is over 2,000 feet underground).
6* Any Wet Paint sign.
7-->''Tell a man there are 978,301,246,569,987 stars in the sky, and he will believe you. Show him a "Wet Paint" sign, and he will check and get his finger stained.''\
8-- '''[[http://en.wikipedia.org/wiki/Julian_Tuwim Julian Tuwim]]'''
9** There is a similar joke about restaurant patrons touching hot plates 'just to be sure.'
10* Some tech departments will periodically send out emails which supposedly have viruses attached, then inform everyone at large to not open the attachment. If someone does, it will turn out that the "virus" is actually a tracer that lets the department tell managers which of their employees cannot follow directions.
11** One story goes that a manager received a spam email with an actual virus attachment. Fortunately, she contacted IT before clicking on it, who confirmed it was a virus. Unfortunately, she took the extra step of warning the rest of the company about this virus, forwarding the actual message with attached virus rather than a screenshot of it. You can probably guess what happened next...
12* Turning off the Electronic Stability Control ([[http://jalopnik.com/5061221/gt+r-owner-busts-tranny-using-launch-control-nissan-claims-issue-not-covered-under-warranty either to get a quicker start-speed by turning off the Launch Control]] or to facilitate street race "drifting") on a [[CoolCar Nissan GT-R]] will void the warranty, should the car get damaged in that mode. Sure, the ESC is shown to make crashes 35% less likely, and there are few legit reasons to turn it off, unless you are stuck in mud or snow... but a button that, when pressed, will let you go 0 to 65 in 3.4 seconds is ''preeeeetty'' tempting. The 2012 Nissan GT-R would remove the bait, by adding the "R-Mode Start" option, where the ESC may be switched to an "R" mode, only coming on after the initial burst of speed.
13* Including Schmuck Bait options in multiple-choice questions is common practice for the [=SAT=]s, standardized tests, and regular school tests. It's so common that test-prep courses actually give the Schmuck a name (e.g. "Joe Bloggs") and demonstrate how this gullible strawman, thinking he's being clever, always falls for the SchmuckBait.
14* British revision site BBC Bitesize loves this "trick":
15-->In order to deal with a rapidly increasing population, the Chinese government introduced...\
16a) The One-child policy\
17b) The Two-child policy\
18c) Free Contraception\
19d) [[Film/ChittyChittyBangBang The Child Catcher]]
20%%* The Voltage Switch on the back of some computer [=PSUs=]. Flicking it causes a loud bang, a lot of smoke, and a broken PSU.
21%%** Well, maybe. The switch routes to a voltage doubler on the 115V setting. Switching it to 230V in the US, Canada, and other 100V-120V countries won't do anything[[note]]At worst, it'll just trip overzealous safety fuses found in some homes[[/note]]. Switching to 115V in 230V countries however will blow up the power supply.
22%% Commented out due to natter. Please rewrite or, if contradictory, remove.
23* Inverted with the Platform/PlayStation3--each console warns on the back that it will only accept one exact power voltage, usually the voltage where the [=PS3=] was originally sold in. [[http://www.eurogamer.net/forum_thread_posts.php?thread_id=68988 People who imported their [=PS3=] found that it's a sham, a [=PS3=] actually has a world-multi power supply board]]. Sony was most likely trying to discourage people from importing their consoles.
24* The ''rm -rf /'' command-line invocation for novice Unix users. Especially don't run it as root... ''rm'' is short for "remove". The ''-r'' flag enables the "recursive" option, and ''-f'' is the "don't ask me if I'm sure" flag. The single slash denotes the entire filesystem, kinda like C: for a Windows machine, but even more. If you run it as a regular user, it'll delete everything you have access to. If you run it as the superuser (that is, root user, user 1, the administrative user) then it'll delete everything. Or at least try to until it deletes something system-critical, [[LogicBomb like the ''rm'' command itself]]. In any case, the system is pretty much unusable afterwards and ''at best'' will require a reformat and OS reinstall. Most modern Unix variants will prevent you from running it, since it has no legitimate use. Fortunately, the GNU version of the command [[CrazyPrepared will check if "/" is in the path and will only continue if you give it a special option]].[[note]] If you want to wipe the disk and reinstall, then you'll use ''fdisk'' or ''dd''. If you want to delete everything because the feds are knocking, then you'd use a secure deletion tool like GNU's ''shred'', rather than something that just marks blocks as dirty. There is no reason ever to use ''rm -rf /'' for anything other than quickly trashing a system. If you ''really'' must try this out, make a virtual machine and go nuts.[[/note]]
25** Unfortunately, doing this on some machines with the new UEFI firmware '''can permanently brick the machine'''. As for some unknown reason, the Linux kernel exposes the entire settings NVRAM and firmware EEPROM as ''erasable'' folders on the machine. Running ''rm -rf /'' with the right privileges will also zero the firmware EEPROM chip and settings NVRAM, rendering the entire system a very expensive paperweight, unless the motherboard has a dual-bios feature to fall-back on and/or ASIC-level firmware recovery like Asus' and Asrock's BIOS FlashBack or Gigabyte's Q-Flash plus, which lets you re-flash the firmware while the machine no longer has a working firmware to begin with.
26** Running a similar command [[https://www.youtube.com/watch?v=8dhp_20j0Ys almost forced]] the animators of WesternAnimation/ToyStory2 to start over from scratch, but fortunately one of the animators kept a backup on her computer because she worked from home.
27** [[http://man7.org/linux/man-pages/man8/hdparm.8.html Man page for hdparm]]. It is a utility of Linux systems for reconfiguring/testing how the OS interfaces with the hard disk, and optimizing those settings for the hardware installed. All the potentially data-destructing options are thankfully lined in '''[[NoIndoorVoice BOLD, ALL CAPS]]''' warnings stating they are '''VERY DANGEROUS''', and that you should '''NOT USE THESE OPTIONS'''.
28** Also, if one types fsck to check a disk on a mounted filesystem, Linux will give a dire error message: "WARNING!! The filesystem is mounted. If you continue you ***WILL*** cause ***SEVERE*** filesystem damage." It won't stop someone from doing it since you can press "Yes" anyway, but at least Linux can say they tried to warn you.
29** Likewise the dd command is sometimes given the nickname [[NamesToRunAwayFromReallyFast "disk destroyer"]] on account of how easy it is to mix up the input and output files, which can result in copying your brand-new, empty hard drive over the one holding all your old data instead of the other way around like you probably wanted. Pretty much every dd tutorial out there will warn you to make sure you've set it up correctly.
30** For Debian-style distributions, attempting to remove an essential package will yield the warning ''"You are about to do something potentially harmful. To continue type in the phrase 'Yes, do as I say!'"''. Indeed, the action will not complete without typing the phrase. [[DevelopersForesight Copy/pasting the line won't work.]]
31*** This message has the tendency to appear when a distro switch out one important package for an alternative (say, dumping [=SysV initscripts=] for [=SystemD=]) during a major distro upgrade under certain conditions. However, in this case, the admin doing the upgrade most likely is already prepared for this and knows what they doing.
32*** A recent bug in the Platform/{{Steam}} for [[Platform/{{UNIX}} Linux]] package causes the package manager to ''uninstall all packages pertaining to the GUI subsystem''[[note]]Specifically, the [=XWindows=] subsystem[[/note]] when trying to install, triggering this failsafe. Linus Sebastian from WebVideo/LinusTechTips proceeds to show how much of a schmuck he is by following the instructions...
33** Also, people who tell Windows users to delete "[=System32=]" because it'll greatly improve performance or display the Triforce from ''Franchise/TheLegendOfZelda''. Windows usually prevents you from doing this however. If you're on an "Administrator" account, you can access the [=System32=] files just fine, but only after seeing a message saying something like "These files are hidden, and are required for proper operation of your computer." You can "okay" the message, but it doesn't actually ''stop'' you...
34** A much more harmless prank tech savvy people use on the non savvy is telling them to press ALT + F4 to fix a slow or troublesome program. Pressing both keys at the same time just closes the program.[[note]]Closing the program and restarting it is often actually a pretty good idea if it's being ''very'' slow or freezing up (many applications, especially poorly-written ones, contain [[https://en.wikipedia.org/wiki/Memory_leak memory leaks]] which cause them to tie up more and more RAM the longer they're run; this process as a whole is termed [[https://en.wikipedia.org/wiki/Software_aging software aging]]), but this is generally better done through a task manager or by restarting the computer.[[/note]]
35** On a similar note, fork bombs- programs which only serve to spawn infinite copies of themselves, using up all of your computer's memory until you're forced to manually turn it off. A simple and very unassuming Linux version is '':(){ :|:& };:''
36* Lecturers at some universities, to catch students.
37** Luis von Ahn at Carnegie Mellon sets at least one assignment per year with a Google-bomb phrase in the questions, leading to a website with the answer and the correct solutions, which logged the IP addresses of people who entered the website. As students were told not to use the internet to do such questions (and such phrases did not exist), he would then happily accuse students who visited the website as cheaters.
38** Samir Siksek is also famous for this at Warwick.
39** Some Software Engineer teachers bug their sample programs in this way to detect code reverse-engineered from that sample program. For example, a program that takes a random number to generate a result would, on a specific number in the test program (and thus all code derived from that program) return a message that the student had cheated.
40** Although not as sophisticated, some professors simply post solutions to current assignments online. The catch? If a student just copied the solution verbatim, the professor would easily accuse that student of cheating. Sometimes the answer or the method is incorrect, making the cheating even more obvious.
41* {{Invoked|Trope}} by police all over the US with [[http://en.wikipedia.org/wiki/Bait_car bait cars]]. A bait car is a CoolCar that's set out on the street and "abandoned", while an officer watches from a safe distance. All the car's functions are remote-controlled, allowing the police to shut off the engine and force-lock the doors in order to [[HoneyTrap trap anyone that tries to break in or steal the car]]. And there's a camera hidden in the dashboard, so they have proof that the thief stole it.
42* [[http://wins.failblog.org/2010/10/31/culture-jamming-graffiti-i-dare-you-to-turn-one-on/ These]] ominously-labelled switches.
43* Sign on Newcastle Tramway: [[http://www.flickr.com/photos/jurvetson/1118807/ TOUCHING WIRES CAUSES INSTANT DEATH.]] [[ArsonMurderAndJaywalking $200 FINE.]]
44* Heart Attack Grill: It's as close to ExactlyWhatItSaysOnTheTin as it can be. It doesn't grill heart attacks, but it is themed around food which is known to cause them and other health problems. Among the delicacies are extra-large hamburgers (the smallest weigh half a pound[[note]]That's about 225 grams for metric folks[[/note]] and the largest run to two pounds[[note]]About a kilo.[[/note]]), served with fries cooked in pure lard. It's themed as a hospital, with the staff being healthy "doctors" and "nurses" who serve to customers as "patients". And the food is named after health problems and surgeries (for instance, the burgers run from "Single Bypass" to "Quadruple Bypass" and the fries are called "Flatliner Fries"). And just to tempt people who are already at risk of cardiovascular diseases, customers who weigh over 350 pounds can eat for free after the staff verifies their weight. Two spokespeople have already died at ages 29 and 52, respectively. If you are still willing to eat there knowing all of this, which is ''very'' likely as the owner is as brutally honest about the food's capacity to kill you as can be...
45* ''Any'' action of which the showing is preceded by the words "DontTryThisAtHome."
46* If you're going to the Long Beach, CA restaurant known as "The Crab Cooker," [[http://en.wikipedia.org/wiki/File:Don%27t_Look_Up_Here.jpg don't look up there.]] [[VisualPun It's a red herring]].
47* Pang Juan, a general of Wei in China's Warring States period, came across writing scratched on a tree: however, it was too dark to read. Accordingly, he had a torch lit, revealing the writing to be "Pang Juan dies under this tree". The lighting of the torch was the signal for an ambush, set by Pang's rival Sun Bin,[[note]]Descendant of [[Literature/TheArtOfWarSunTzu Sun Wu]], who Pang Juan had falsely accused and tortured several years earlier[[/note]] to attack. Pang Juan would commit suicide under that same tree.
48* In Metro Manila in the Philippines, there is a sign set-up in the middle of a two-lane main thoroughfare which reads (in the vernacular) "Do not cross. Someone has already died here. Use the overpass." This is a warning to all potential jaywalkers to use appropriate overpasses and pedestrian crossings. Guess what most of the Filipinos reading it do next.
49* Rabbits, despite being oh-so-cute and snuggly, are reportedly prone to kicking forcefully with their (clawed!) hind feet in response to the inevitable attempts at snuggling them.
50** Similarly, cats. Ultra-cute, fuzzy, and snuggly, but also extremely flexible, pointy at five of their six ends, and notoriously prone to violent mood swings. They often like to cuddle, but don't expect them to remain in that mood for a very long time...
51*** A cat lying on its back exposing its belly--it's not inviting you to pet its belly, it's inviting you to ''play.'' Unfortunately, it's a kind of playing that typically involves claws, teeth, and pain.
52** There's a reason "Attack Dog" or "Aggressive Dog" signs are placed on houses.
53*** In general, dogs. Like cats, they are prone to mood swings, can mistake overly affectionate petting for play time, and they can send mixed signals. Just because they are wagging their tail and keeping their ears up doesn't mean you should call them over or pet them.
54* If you access the [[KlaatuBaradaNikto about:robots]] page on UsefulNotes/MozillaFirefox, there is a button like with most error pages that reads "Try again". Pressing the button yields another message: "[[Franchise/TheHitchhikersGuideToTheGalaxy Please do not press this button again]]."
55** Pressing the button again causes it to disappear.
56* Bot messages. Especially when they hijack someone you know that has potential to send you links. The only exception are YIM spam bots, as they know that any message exchanged opens door for programs to snatch login data.
57--> '''[=NotASpamBot=]''': Hi! I just met you and this is crazy! So here is my site and join me maybe! www.totallysafesexychicksite.org
58--> '''Friend''': I just found a way to find out if someone blocked you! Click here >> www.amiblocked.com
59** In a similar manner, people that send you message or emails that say something like "We need to verify your account/your account information may be compromised. Please enter your account information to secure/verify your account." Nearly every single website or online company will NEVER ask for your personal information, yet people on a daily basis keep giving up their info and have their bank accounts or personal identity stolen as a result.
60** The chat service Discord been plagued by this ever since the day they made a deal with Epic Games Store to give a "Free" One Month of Discord Nitro. Ever since bots have started to lure people into getting "Free 1 Month of Discord Nitro (Steam)", and they have been spreading faster than COVID-19. Coincidentally, their major spread took off in 2020.
61** By 2022, a new scam had popped up with someone on the user’s friend list sending a direct message to say they found incriminating stuff about the user on a Discord server. Clicking the link is harmless, but the server requests authorization via a QR code to validate the user. Scanning the code gives the scammers login data and hacks the user account, continuing the chain. It’s basically a variation of the aforementioned bot spam and similar email scams, usually involving bait saying the victim appeared in embarrassing photos or videos.
62** In a similar vein, someone on your friends list might direct message you out of the blue telling you that they're developing a game and need you to test it out. ''This means someone has compromised your friend's account'', and they're preying on your desire to help out a friend and interest in playing some sick new video game that your friend personally worked on. If you click on the link for the alleged game (which will lead to a very suspicious-looking Blogspot blog), download the executable, and then run it, it will swipe your Discord credentials so that the hacker can use your account to repeat the process with someone else.
63* In 2008, [[http://www.wired.com/threatlevel/2008/11/valve-tricked-h/ Valve attempted to get a hacker arrested in an FBI sting operation by offering him a job]]. Though they did get him to admit to infiltrating their network he didn't fly to the US for a "face-to-face" interview after the German police caught wind of it and arrested him in his home of Europe.
64* If anyone ever asks if you if you want a Hertz Donut, the correct answer is ''no''. If you say yes, they'll punch you and say, "Hurts, don't it?"
65** Similarly, guys should beware being asked "What's the capital of Thailand?", as the answer[[note]]Bangkok[[/note]] leads to a GroinAttack.
66* Shortly after the launch of the Platform/XboxOne, an image spread around with instructions that supposedly enables backwards compatibility with Platform/Xbox360 games, by going into the developer console and changing the sandbox ID to "freezone.reboot". It actually sends the console into an infinite reset loop, effectively bricking it.
67* A [[http://www.theguardian.com/science/2014/jul/03/electric-shock-preferable-to-thinking-says-study psychological experiment]] found that, left alone for fifteen minutes with a button that delivered a painful electric shock, two-thirds of men and a quarter of women would press the button. [[TooKinkyToTorture One 'outlier' pressed the button 190 times]].
68* Some people catch pedophiles on webcam by pretending to be a child and using a fake webcam video, hoping the pedophile is too stupid and/or horny to notice the video is on a loop.
69* The Other Wiki has a similar concept in its project pages: https://en.wikipedia.org/wiki/Wikipedia:Don%27t_stuff_beans_up_your_nose
70* The Jimmy John's sub sandwich food chain have folded paper displays on their tables with a giant QR code that says "WHY WOULD ANYONE SCAN THESE!? (I don't even know what they do.)" Scanning the QR code gives you a message.
71-->"[[{{Troll}} Dude, you really scanned that thing?]]"
72* The "Bullet Catch" is an infamous feat of stage magic which is virtually ''never'' attempted today, as several professional magicians who'd historically made it a part of their repertoire have either killed their assistants doing so, or been killed themselves. Despite its deadly record, or more likely ''because'' it's so lethal, it's still a tempting prospect for little-known magicians who want to build up their reputations very fast. (The ones who've already made it big avoid this trick like the plague.)
73** The last widely publicized time that this trick/stunt was attempted was in 1995 when Creator/PennAndTeller decided to try it, with Teller firing the gun for Penn to catch the bullet, complete with a US Air Force officer and a Las Vegas Metro Police officer. The stunt was the grand finale for the 2nd annual "World's Greatest Magic" show on Thanksgiving night. Everything worked flawlessly.
74*** Then again, if there's anyone who could be counted on to know how to do this trick/stunt competently, and to make a point of abiding by that knowledge, it's those two.
75** A more recent attempt in 2012 by Steve Cohen led to him being hospitalized for bruising due to a piece of glass that the bullet was shot through. He's not only lucky to have [[ComicallyMissingThePoint caught the bullet]]; he's lucky to have survived the trick at all!
76** The ''Series/MythBusters'' proved in one episode that the bullet catch trick is just that--a trick. Any ''real'' attempt to catch such a bullet with your teeth would shatter said teeth and leave you seriously injured, if not dead.
77** The important thing to remember about magic tricks is that they use visual and audio trickery to give the impression of the impossible, with the actual execution being far safer than the trick looks. Bullet-catching involves keeping the bullet in the magician's teeth the entire time (having been slipped in by sleight-of-hand at some point after having been shown to the audience to prove that yes, a real bullet is involved) while the assistant uses a blank cartridge, the "cutting a box containing a person in half" trick sees the assistant retracting their legs into the front half of the box (often with a pair of convincing fake feet sticking out of the back half) as the box is split apart, and so on. "Magicians" as it were, do not actually refer to themselves as such. They market themselves as it, and have no problems with being referred to with that name, but personally they prefer "Illusionist."
78** And to prove that it’s all (literally) smoke and mirrors with some handy sleight of hand, the trick was covered comprehensively on Series/BreakingTheMagiciansCodeMagicsBiggestSecretsFinallyRevealed. Let’s just say it involves a lot of Hollywood class effects. Watch the detailed breakdown [[https://youtu.be/ViwlVAp7Cbs here]].
79** In 2017, a [=YouTuber=] and her boyfriend attempted a variation of the trick--stopping a bullet fired from a .50 calibre Desert Eagle handgun with a phone book. [[http://www.cnn.com/2017/06/29/us/fatal-youtube-stunt/index.html The bullet went straight through the phone book into the man's chest and killed him on the spot.]] No, really, DoNotTryThisAtHome, kids.
80* ''Literature/TheRealFrankZappaBook'' by Music/FrankZappa has an entire chapter devoted to the subject called: "All About Schmucks''.
81* For Black Friday 2014, [[TabletopGame/CardsAgainstHumanity Cards Against Humanity]] took their game off of their store and replaced it with a $6 box of "Bullshit." Despite repeated assertions on the store page and through social media that the box would contain "literal feces, from an actual bull," over 30,000 people purchased the box. Yes, it contained (sterilized) bull poop. Yes, people were upset.
82* The line for the Indiana Jones ride in Disneyland is made up to look like you are walking through ancient ruins. At one point, you go through a hall with poles holding up the ceiling. One of these is within reach of people in line and says "Do Not Touch". If you pull on it, the ceiling of the hall begins to shake and may even drop slightly. At another point you pass a well with a rope and a sign saying "Do Not Pull". If you decide to do so, the rope actually has some resistance and you will hear some audio from the well of something breaking and a person complaining about you destroying some artifact.
83* A fairly popular prank amongst dirty-minded children is to ask someone to spell "icup", Gullible folks will not notice that they're saying "I see you pee".
84** A variation is to ask the victim to spell "oil cup" without using the letter L. This yields, "Oh, I see you pee."
85* Similarly, write out "Thug aim" and challenge someone to say it. "The Game," a.k.a. [[http://knowyourmeme.com/memes/the-game that memetic "game" where you lose when you think about it]].
86* Nature is full of these. One great example are anglerfish. Their dorsal fin has evolved into a tempting lure. Fish swimming by see a morsel, but find themselves violently engulfed by the far larger predator.
87* Search for any recent big movie on Website/YouTube and you'll see tons of videos claiming to be the full movie, but if you click it it will give a link to where it claims the full movie really is, but it really leads to a virus. Sometimes these fake videos go up before the movie is even out. Sometimes the thumbnail is just a promotional image for the movie or the logo for the movie studio. Sometimes it's not even the right movie studio logo.
88** It doesn't even have to be something recent either. This happens for just about any movie or TV show when you search it up, regardless of age.
89* Clicking on links leading to the Website www.nicht-klicken.org (don't click) will get you spammed with over a thousand pop-ups.
90* By default, Platform/MicrosoftWindows hides extensions on files with known file types; many tech-adapt users strongly advise disabling this feature, because some viruses disguise themselves by masquerading as a multimedia file or document for example, such as ''song.mp3'' or ''important document.pdf'' ... which are actually executable files, i.e. the actual full filename is "''(filename)''.mp3'''.exe'''". Joel of WebVideo/{{Vinesauce}} had a field day with these in his "Windows 8 Destruction" video, the climax of which involves him [[http://youtu.be/d-vB8qdNSYc?t=11m16s opening up a file named "videoxxx.avi.exe"]] and discovering that it's ransomware that prevents his PC from booting unless he pays for an unlock code (fortunately, he was using a virtual machine). On the other hand, there were more benign examples involving fake music downloads (such as [[Music/SnoopDogg Gin and Juice.exe]], which amused him immensely), that installed an adware-laden download manager that didn't work.
91* In the late 2000's tons of videos appeared on [=YouTube=] claiming to have found glitches, exploits, or secrets in the most popular video game titles at the time (such as ''VideoGame/Halo3'' or ''VideoGame/GrandTheftAutoIV''). However, once you clicked on the video, it turned out to be a Rick Roll, Screamer, or [=YouTube Poop=]. Additionally, the image was a random screenshot of the game pulled off the internet and placed in a certain position so that it would show up as the video's thumbnail.
92* At the Battle of Hastings in 1066, William (commanding the Normans) ordered part of his army to deliberately retreat; the Anglo-Saxons on the other side came out of their strong defensive position to pursue ... right into William's reserve cavalry in full charge. After the third repetition of this, the Anglo-Saxon defensive line had lost so many men that William could finally break through, and become William the Conqueror.
93* Speaking of the military, if you happen to have a friend in uniform ask him what random crap job was dumped on the poor hapless private who rose his hand when the question "Who likes ice cream?" or "Who's interested in skydiving?" was asked. While you're at it, ask him if it was ''him''. Despite being a very obvious trap, it is very common practice for the higher-ups to sucker in an unwitting volunteer for an unpleasant task by asking such a question because there's always one guy who's either too inexperienced or simply not paying attention who puts his hand up.
94* An attempt to avert this with high voltage equipment warns "Not only will this kill you, it will hurt the entire time you are dying."
95* An unintentional example comes in the form of the cartridges for the Platform/NintendoSwitch. Since the cartridges are about the size of a US quarter, Nintendo had them coated with a bitter-tasting non-toxic additive (denatonium benzoate, to be exact) during the manufacturing process to discourage small children from trying to eat them. Naturally, a trend arose during the system's launch period in which an overwhelming number of ''grown adults'' [[https://www.youtube.com/watch?v=UjQefYbFFYo started licking the cartridges]][[BileFascination to see if it really was as bitter as others claimed]].
96* Defcon conferences, as they attract the top hackers in the world, are rife with this. If you're around the Las Vegas venue when it's going on, under no circumstances should you connect to any open Wi-Fi networks, insert any "lost" USB sticks into your computer, use your smartphone without it being set to "airplane" mode or use any ATM that is conveniently nearby.
97* The "Whatsapp Moan", a practical joke that became popular in Brazil, is all about this: the person receives a way too quiet audio. Once the volume is raised, it cuts to a really loud case of TheImmodestOrgasm.
98* Who hasn't heard the "gullible isn't in the dictionary" trick?
99* In July 2018, Creator/HidekiKamiya imposed [[https://twitter.com/PG_kamiya/status/1016496741074399232 an embargo on any replies to him in non-Japanese languages]], including English. He states that this is because he's fed up with people who just reply to his posts without reading them, [[OpenMouthInsertFoot think before posting]], or are just plain racist. He knows that there are people who are going to attempt to talk to him in English anyway and finds those people amusing to see (and block). In short, his Japanese-only rule serves as a filter for both [[FunnyForeigner idiot foreigners]] and excessively curious people.
100-->"I'll keep stating that I block foreign language posts (of course including English) for a while. That lures lots of insects to block. Very funny to see."
101** What happened instead was, as seen on the thread on Twitter, [[InsultBackfire people posting to get blocked on purpose]], [[BileFascination just so they can say Hideki Kamiya blocked them]]. Realizing this, Kamiya started blocking people for fun: including fellow developers, artists, musicians. To the point that, when Creator/PlatinumGames did a Kickstarter for ''VideoGame/TheWonderful101 Remastered'', one of the stretch goals was getting blocked by Kamiya.
102* Honeypots in computer security are isolated and monitored sections of a network that look like a regular part of the network, usually containing something of interest. The hacker investigates, ends up in the honeypot, and is blocked.
103* The UK driving test has a couple:
104** The test includes two "show me, tell me" questions regarding the basic functions of a car, the latter of which is done before the test begins and is just answered verbally, and the former of which is done during the test, and has you demonstrate the function that the examiner is asking about. Usually not answering the question or getting the answer wrong just results in a minor fault, of which you are allowed to commit 15 before you fail the test. However, if an examiner is feeling particularly fiendish, they will ask you to demonstrate the car's horn in a queue of traffic. The correct answer to this is to say that sounding the horn at that point would be inappropriate, and that you'll do it when you're out of the queue. Sounding the horn there and then will be considered an attempt to intimidate the driver(s) in front of you, which is a ''serious'' fault and thus will make you instantly fail the entire test. Alternatively, they'll ask you to demonstrate something that requires you to look away from the road for an extended period of time -- such as the fan or windshield heater controls -- while you're driving through a narrow and winding country lane, which will probably also result in a serious fault for lack of control and/or judgement.
105** Another way the examiner might trip you up is to tell you to take "the next permissible road on the left/right" -- the word "permissible" being included usually means that the actual next road (possibly even the next ''two'' roads) on that side will be a no-entry road. Naturally, trying to drive down such a road will lead to an instant failure. Prior to 2013, they might also have tried to trip you up by indicating that you should turn onto a motorway, which UK learner drivers were not permitted to do at the time.
106** The theory test, which is separate to the practical test, has one in the "hazard perception" section, the instructions to which tell you that you won't be penalized for clicking on the video clips too many times. Fun fact; you totally ''will'' be penalized if you do click too many times, namely by scoring zero for that clip. Fortunately, it does at least tell you when this happens, which should prevent you from making the mistake again (unless you get nervous and just start clicking randomly), but it leaves much less room for error in the rest of the section.
107* Some species of orbweaver spiders specialize in hunting fireflies. When a firefly gets caught in the spider's web, it will keep flashing its light, even after the spider kills it. This attracts more fireflies, which get caught and keep flashing, which attracts more fireflies...
108* Online scams (emails/facebook articles/etc.) will sometimes contain deliberate spelling and/or grammatical errors ''precisely'' so that they only bait schmucks and not anyone intelligent enough to spot the mistakes and get suspicious. It's far easier to con stupid people.
109* Spoilers. In particular, browsing wikis (including Website/ThisVeryWiki) and discussions on a work you're going through or plan to go through. You might be tempted to learn a little bit more about, say, a character you like, and if it's this wiki you may be curious about tropes that apply to them, but then oops! Turns out they undergo a FaceHeelTurn, they die, or [[WalkingSpoiler everything about the character is a spoiler]]. Yes, there may be spoiler warnings, but surely browsing the first few tropes examples won't hurt...[[TemptingFate right?]]
110* A lot of [=CPUs=] these days have an instruction to disable interrupts, which is useful when you need the CPU to modify data without being interrupted by something else, which could potentially modify that data too. They also have an instruction to go to sleep until interrupted. You can see that disabling interrupts, then sleeping, can lead to the CPU locking up. Such instruction though likely won't execute on modern processors until interrupts are enabled again.
111* The website [[https://rentahitman.com/ Rent-A-Hitman.]] No, it's not run by [[TheMafia "Guido Fanelli"]], but by Bob Innes. He originally created it in 2005 as part of a cybersecurity business that never went anywhere (the name being a {{pun}} on the double meaning of "hit", which can also refer to attacking a computer system), and forgot about it afterwards. He [[https://www.washingtonpost.com/nation/2021/11/22/rent-a-hitman-website/ kept the site up,]] though, partly for comedy and partly because, when he looked at the site's email in 2008 and saw that he had gotten hundreds of serious inquiries, he decided to start working with the police. Numerous people have actually tried contracting Rent-A-Hitman's "services" thinking they were legit, only to find out that the site's 17,985 "field operatives" are actually the approximate number of law enforcement agencies in the US.
112* An engineer named Mark Rober has designed a device that takes the form of an electronics box to trick package thieves during the holiday season, when package thefts become rampant. The device, when opened, shoots out glitter and makes sounds. He even adds some more features and tamper protections for each iteration. [[https://www.youtube.com/watch?v=3c584TGG7jQ Version 4]] is given a feature in which it can open itself midtransit. The final version, [[https://youtu.be/iWeu2dxHRDg Version 5]], which Rober claims would be the last as his vigilante handiwork has caused a major drop in porch theft cases, added autonomous drones and doubles down on the fart spray.
113* React (a programming library) contains an undocumented property named [[https://github.com/reactjs/reactjs.org/issues/3896 __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED]]. While being fired isn't a guarantee, it is a bad idea to use it because its structure and behavior could change with any release.
114* Anything online that promises free items and currency in online games or free gift card codes. They don’t usually work and most just pretend to connect, then ask the user to verify they’re human by doing surveys or downloading apps. Some likely have viruses or ways to steal information.
115* AMD, a manufacturer of PC [=CPUs=], will happily advertise a feature called Precision Boost Overdrive (PBO) which allows the CPU that supports it (which is most of the Ryzen lineup) to self-overclock harder and/or longer than it normally would when paired with a CPU cooler that's a better performer than the stock cooler. [[https://www.reddit.com/r/Amd/comments/hatyyq/just_a_fyi_pbo_voids_amds_warranty/ Using PBO also voids your warranty]] and to make matters worse, it tends to be ''enabled'' by default.
116* Email scams work on this. They’ll say things like you have a recent purchase or your bank account may have been hacked or a package coming to you has a problem. The sites linked in the emails look legitimate but have been set up to spoof the real websites and get your information. There are similar call and text based ones as well, often involving things like Social Security or the [=IRS=] in the United States and threats of arrest.
117* One form of assault on late-night drivers, particularly in rural areas on backroads, consists of setting up some sort of barricade on the road, made with something like a fallen tree branch, a [[PopTheTires spike strip]], or an animal carcass. Less-savvy drivers will get out of the car and try to move the object(s) in question so they can continue on their merry way...only to be lethally attacked by someone who was waiting out of sight. A variant of this involves traffic cones so that the driver will assume it's some sort of checkpoint and wait for someone to approach. That someone will likely mug them or take their life.

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