GRAMMAR GLITCHES

The 10 Funniest Mistakes, Typos, And Misprints In History

Image: Natalia Y.

Everyone makes mistakes, that’s a given. But sometimes, even the smallest slip-ups can lead to catastrophic outcomes, no matter how unintentional. These grammatical gaffes stand as a testament to the power of language, reminding us to always proofread before making history.

From political slip-ups to literary lapses, here are ten instances where, er… let’s call them unexpected linguistic detours, induced everything from laughter to financial ruin.

Image: Lars Blankers

In 1992, during a visit to a New Jersey elementary school, then Vice President Dan Quayle put himself in an embarrassing situation when he tried to correct what he thought was a spelling mistake. After a 12-year-old student correctly spelled the word "potato", he promptly added an e to the end of the word, creating an awkward moment as he insisted that "potatoe" was the correct spelling.

Image: Priscilla Du Preez

A 1631 edition of the Bible became infamous as it contains a number of mistakes that substantially distort the intended message of the sacred text. Known as the "Wicked Bible", among its most egregious blunders is the omission of the word "not" from one of the Ten Commandments, transforming the original sentence into the scandalous directive, "Thou shalt commit adultery." However, some argue that this was not a product of lazy proofreading, but rather sabotage from a competitor.

Image: Taha

Constable Dogberry, a character in one of Shakespeare’s most beloved comedies Much Ado About Nothing, became the namesake for malapropisms, as he consistently ends up uttering absurd phrases while attempting to sound intelligent. Some of the most popular "dogberryisms" include confusing suspect with respect, ex-communication with communication, comprehend with apprehend, and even redemption with damnation!

Image: SpaceX

How expensive can a typo be? Well, as NASA found out, almost 80 million dollars. In 1962, a missing mathematical symbol in Mariner I’s code led to the spacecraft blowing up in a million pieces over the Atlantic. How could this happen? Apparently, an engineer missed an overbar (a mathematical figure that indicates the mean of a set) while transcribing the calculations by hand. This caused the spacecraft to overcorrect its trajectory, eventually throwing it off course.

The takeaway from this story is simple: always proofread. After all, even the most brilliant people are not immune to making mistakes.

Image: micheile henderson

Talking about expensive typos, a misplaced comma in the 13th Tariff Act cost the United States over 40 million dollars in 1872. The Act included a list of items exempt from taxation upon entry to the country, and included in the list was an item that read "fruit, plants tropical and semi-tropical for the purpose of propagation or cultivation."

According to the government, the comma was meant to be a hyphen, meaning fruit-bearing plants, but the correct grammatical interpretation suggested that all fruit were included in the exemption. It took almost two years to fix the mistake, but it was already too late.

Image: Janko Ferlič

Don’t worry kids, Yogi Bear is totally fine. But for a moment in 2015, Associated Press declared the cherished bear dead, when someone published Yankees’ legend Yogi Berra’s obituary under a hysterical title: "Yogi Bear has died. He was 90." While this was likely the mix-up of an underslept intern, Berra was known for his amusing unintentional witticisms and malapropisms, remembered for gems like "It ain't over 'til it's over," "It's déjà vu all over again," and "Nobody goes there anymore. It's too crowded."

Image: AbsolutVision

In a peculiar incident in December 2017, a Cambridge newspaper unintentionally became viral when a placeholder reading "100PT SPLASH HEADING HERE" found its way into the headlines. Meant for internal use during layout, the cryptic text unexpectedly amused readers and sparked online speculation, with some even joking about the headline being a warning of an incoming tsunami wave. The newspaper’s editor-in-chief later apologized profusely for the amusing mishap, which was allegedly caused by a technical issue.

Image: Michał Parzuchowski

Around 2010, an article from an unknown local newspaper went viral for misspelling "Mississippi" as "Missippi." You might argue that they simplified it, but the funniest part is that the article was about the purported success of a literacy program in the state. Maybe the program needed to focus on newspapers too.

Image: Peter Lawrence

The Guardian, one of the UK's most renowned newspapers, earned an unintentional reputation for its numerous typos. In a memorable blunder, it once printed its own name as "Gaurdian," prompting satirical magazine Private Eye to nickname them "Grauniad." Overall, the newspaper took it in good stride, and the nickname is still playfully used, even among its journalists, to refer to the media outlet with a touch of humor.

Image: Daria Kraplak

Unbeknownst to most, James Joyce’s famous novel Finnegans Wake hides an easter egg of sorts. When it comes to an author famous for his experimental and gibberish-like writing, what can possibly be considered a mistake or a typo? Well, it seems the author used to dictate parts of his work to his friend Samuel Beckett, and during one of these sessions, someone knocked at the door, with Joyce immediately saying "Come in." Without thinking twice, Beckett wrote that along with the rest of Joyce’s dictation. It is likely that Joyce noticed the gaffe, but decided to leave it there just to mess with the readers.

Decoding

Being a "treasured guest" is not a compliment. This is the hidden meaning

Have you ever heard "Code Adam" while shopping for groceries at Walmart? Or maybe you’ve heard how "Dr. Firestone" was being paged during a routine hospital visit. They sound like harmless announcements. But behind these ordinary words are secret codes staff use to signal emergencies without causing panic. From hospitals and supermarkets to airports and Disney Parks, these phrases quietly warn employees that something is happening. You hope you never hear them, but if you do, it helps to know exactly what they mean.

We all love getting special attention at airports or hotel desks, but if you hear the clerk call you a "treasured guest," don’t feel so flattered. You may not be as VIP as one could think.

In the hospitality industry, "treasured guest" has become a humorous bit of industry folklore to describe someone causing trouble. Maybe a customer yelling at staff over expired coupons, demanding impossible accommodations, or throwing a full-blown tantrum at the front desk. Whatever it is, the phrase has become the staff’s secret way to warn co-workers without escalating the situation in front of the customers. Most guests don’t realize the meaning, but once you know it, you may start hearing it more often. We just hope it’s not about you.

Imagine you’re pushing a shopping cart through Walmart when suddenly the overhead speaker announces, "Code Adam." You can easily assume it’s some kind of employee meeting or cleanup request. But when you see them start locking the exits and moving around, you know something’s wrong.

This code was created in 1994 by Walmart in collaboration with the National Center for Missing & Exploited Children (NCMEC), in memory of the tragic case of 6-year-old Adam Walsh. Adam was abducted from a Sears department store in 1981 while shopping with his mother. His father, John Walsh, later became famous for hosting the TV program America’s Most Wanted and advocating for missing children. Even if Adam’s story ended in tragedy, Walmart created the emergency system in Adam’s memory, and other retailers soon adopted it nationwide, intending to have a quick response to missing or abducted children.

You’re sitting in a hospital waiting room during a routine check-up when you suddenly hear "Code Blue, Room 214." Most people immediately know it sounds serious, even if they are not entirely sure why.

The phrase "Code Blue" is used at hospitals to draw the necessary staff and equipment to perform a resuscitation. It was created in the early 1960s at Beathany Medical Center by Dr. Hughes Day. Before then, hospital resuscitations were often chaotic and poorly coordinated. In 1961, Dr. Day received a grant to build one of America’s first cardiac care centers, and he developed both the Code Blue alert system and the modern crash cart to improve survival rates during cardiac emergencies. Today, the system is used in hospitals across the country, sometimes with specialized versions like "Code Blue Pediatric" or "Code Blue Neonate."

Imagine visiting a loved one in the hospital when the intercom calmly announces, "Paging Dr. Firectone to the third floor." Your head surely goes, "Dr. Firestone’s probably having a busy day up there." He is, but it’s not what you think.

The phrase is actually a discreet fire alert used to warn staff about smoke, flames, or overheating equipment without frightening patients and visitors. Hospitals adopted these coded announcements after realizing that openly yelling "fire" over loudspeakers could create panic, especially among patients who aren’t able to move quickly. "Code Red" is an alternative used by many health centers today, but it also hints at the situation while keeping hallways calm.

You’re standing at a checkout counter when the cashier picks up the phone and quietly says, "I need a Code 10 authorization." If you think that’s just another way to get a supervisor’s approval or technical issue, think again. In reality, the cashier may suspect the credit card is stolen or fraudulent.

Code 10 was developed through a cooperative effort between major credit card companies like Visa and Mastercard, along with international standard organizations. As credit cards became more common in the 1960s and 1970s, stores needed a discreet way to alert banks about suspicious activity without directly accusing customers and potentially putting employees at danger. When a cashier requests a Code 10, the bank’s operator begins asking yes-or-no questions to assess the situation and guide the employee on what to do next.

You’ve probably experienced those long airport security lines. The wait is usually uneventful. But sometimes, you can hear "Code Bravo" over the speakers. Maybe it’s a delay, or maybe it’s an issue with luggage. Within seconds, people stop moving, the security line freezes, and exits may even close. It’s something bigger.

Code Bravo is the emergency phrase used by airport security and the Transportation Security Administration to signal a serious security threat, such as an unattended bag, a breach at a checkpoint, or someone slipping into a restricted area. The term comes from the international phonetic alphabet used in aviation and military communications, where "Bravo" represents the letter B. When this is called, security staff immediately lock down affected areas, stop screening lines, and search for the source of the threat. To passengers, it’s sudden and confusing, but to security, it’s a carefully rehearsed response.

You are heading back to your cabin on a cruise ship when the speakers announce, "Code Alpha, Deck 7." You may think Alpha is related to the captain, but that’s not the case. It means someone on board is suffering a medical emergency.

The phrase comes from the NATO phonetic alphabet, where "Alpha" represents the letter A. In maritime emergency jargon, it became shorthand for a Priority A medical situation requiring immediate response. Cruise lines such as Royal Caribbean and Disney Cruise Line commonly use the term, though some ships use variations like repeating "Alpha" three times. Once the code is announced, onboard medical teams rush toward the specified deck or cabin. If necessary, stretcher crews are mobilized, and in severe cases, the ship may even divert course toward the nearest port for emergency evacuation. Passengers are enjoying the views, but the staff is running to save a life.

Anyone who remembers the CB radio craze of the 1970s probably smiles when they hear "10-4." Movies, truckers, and radio fans turned those number codes into a part of American culture. So if you overhear "10-33" on a police scanner, you might assume it’s just another routine message. But it’s not as simple as it sounds.

The 10-code system was first created in 1937 by Illinois State Police communications director Charles Hopper and later standardized by the Association of Public Safety Communications Officials, better known as APCO. Officers needed short phrases they could understand clearly over crackling radio signals. The 10-33 code commonly means an officer needs emergency assistance. In some departments, it also signals radio silence so dispatchers can focus on the crisis unfolding in real time.

Disney World is amazing, the parks offer something for everyone, and there are things to see wherever you look. But that’s exactly the kind of place where a child can easily disappear into a sea of strollers, balloons, characters, and crowds. For that reason, Disney has developed the "Signal 70," which alerts cast members and security that a child has become separated from their family.

The number comes from older police and emergency radio systems, where "70" was commonly associated with missing persons. Disney adopted the phrase because it allows employees to communicate discreetly without frightening or alarming nearby guests. If a member finds the child, they gently -and magically- escort them to Baby Care Center, where they coordinate the reunion.

Cruises are great to relax, enjoying a good book under the sun with a nice drink by the side. Until you hear "Echo, echo, echo" on the speakers. If you do, something is happening somewhere else on the ship.

The code is used among cruise employees to signal that dangerous winds or a navigational hazard are affecting the ship. It comes from the international maritime phonetic alphabet, where "Echo" stands for the letter E. In maritime signalling, the letter traditionally means "I am altering my course to starboard." And, in time, the phrase became associated with urgent ship maneuvers and weather-related warnings. However urgent, the repetition of the word by three doesn’t represent life-threatening situations. It alerts the crew of a certain hazard to prepare while avoiding panic among passengers.