You say these phrases all the time, but do you know their grim origins?

We toss around old sayings all the time—some without thinking twice. But have you ever wondered where these phrases actually came from? You might be surprised (and a little unsettled) to find out that many of them have pretty grim backstories. Even if we’re keeping things light and curious, you’ll never look at everyday expressions the same way again!

Image: Jonathan Larson

The Mad Hatter may have been lovable and quirky in Alice in Wonderland, but the origin of the phrase isn’t nearly as charming. In the 18th and 19th centuries, hat-makers, especially in England, used mercury in the felt-making process. Long-term exposure to the toxic substance led to tremors, confusion, hallucinations, and even full-blown insanity. So, when someone was "mad as a hatter," it wasn’t a joke, it was actually a tragic side effect of their trade.

Image: Markus Winkler

These days, "deadline" means you’re rushing to finish your taxes or meet your grandson’s birthday RSVP. But during the Civil War, it was a deadly serious term. Prison camps had an actual line drawn in the dirt—step past it, and guards had permission to shoot without warning.

Image: Greg Rosenke

If your grandkids ever run through your living room like a tornado, you’ve probably said they were "running amok." Originally, this referred to sudden, violent rampages by certain warriors in Southeast Asia. European colonizers didn’t understand it and blamed the devil, but it was likely tied to deep psychological distress. Over time, the phrase softened, but its origins are quite dark, don’t you think?

Image: wilsan u

It might sound like gentle teasing today, but "pulling someone’s leg" used to mean something far more sinister. In the crowded, foggy streets of old London, thieves would trip unsuspecting victims by yanking their legs from behind—either to rob them or help an accomplice mug them more easily. So next time someone says they’re "just pulling your leg," be glad it’s only a joke.

Image: Alin Meceanu

You’ve probably said you were "taken aback" when someone shocked you with unexpected news, right? Did you know this phrase has nautical roots? On a sailing ship, if the wind hit the sails from the front, it could stop the boat dead in the water, or even pull it backwards. That "aback" feeling was equally surprising as it was alarming!

Image: Tom Pumford

We call fake emotions "crocodile tears," but the story behind it is a bit strange. People once believed crocodiles cried while eating their victims, like they were able to show some kind of twisted remorse. Of course, science has since debunked this theory, but the legend stuck around. So when someone puts on a sad face to get out of chores, just remember: even reptiles have better excuses.

Image: Aarón Blanco Tejedor

Before painkillers and numbing gels, wounded soldiers had one brutal option during surgery. Can you guess what it was? That’s right, bite the bullet. Literally. On the battlefield, doctors had to work fast and without anesthesia. A bullet between the teeth gave patients something to focus on while wounds were stitched (or worse!)

Image: Alvaro Reyes

We know that Shakespeare loved creating new words and phrases, and "the be-all and end-all" is one of his most dramatic. It first appeared in Macbeth when the title character thinks of ending the king’s life as a final, all-important solution. These days, we use it for less murderous things—like the ultimate plane has for some things.

Image: Ben White

Saying "God bless you" after a sneeze might seem polite, but it stems from a much darker place. In the time of the bubonic plague, a sneeze could be an early symptom, and people feared it meant death was close. Saying "God bless you" was like a quick prayer that you’d survive. Other theories suggest it was meant to keep your soul from escaping. Whatever the origin, it was more panic than politeness.

Image: Brett Jordan

We say someone’s "wreaking havoc" when they’re causing trouble. But centuries ago, it was an actual military command. Once a battle was won, officers might yell "Havoc!" and soldiers were free to do and destroy whatever they wanted. As you can imagine, the chaos was so brutal that King Richard II officially banned the cry in the 14th century.

Hospital secrets

What is a "Code Gray" and what you should know if you hear it at the E.R.

A trip to the emergency room can be stressful enough without hearing doctors and nurses speak a language that sounds like a secret code. One minute, someone is asking for medication "STAT," the next there’s a "Code Gray," and another patient is suddenly "NPO." What do those words really mean? Some are official medical terms, others are insider slang, but they all help hospital staff communicate quickly when every second counts. Here are 10 of those codes explained.

The E.R. can be hectic and unpredictable. Most patients are frightened or uncomfortable, but now and then someone becomes aggressive because of pain, confusion, mental illness, or the effects of alcohol or other substances. That’s when you can hear "Code Gray" announced over the speakers.

The code is used to summon security officers to help manage a violent or combative situation. While color codes vary from one hospital to another, Code Gray commonly signals that staff needs extra assistance to protect patients, visitors, and healthcare workers. Even if you know it now, most people in the waiting room never know what happened, and that’s exactly the point.

You have a scheduled surgery, you’re in your bed waiting to be taken to the surgery room, and you ask for a cup of coffee to make the wait lighter. The nurse will probably tell you you’re an NPO. You may think it’s serious, but it’s simply a procedure.

"NPO" is an abbreviation that comes from the Latin phrase Nil Per Os, which means "nothing by mouth." It tells patients they cannot eat, drink, or sometimes even take medication until doctors say it’s safe. The rule is most common before surgery or certain medical tests, when food or liquids could increase the risk of complications or alter the results. It may be frustrating, but it’s an important part of keeping patients safe.

You’ve probably been through the experience of visiting an emergency room, either to get checked or to visit a loved one. In that part of the hospital where everyone is rushing to save lives, you’ve probably heard a doctor asking for the R.C.P. cart or medication "STAT!" It sounds urgent, and that's because it is.

The expression comes from the Latin statim, which means "immediately" or "without delay." Hospitals have used Latin medical terms for centuries, but STAT is one of the few that remains part of everyday conversation. When a doctor says it, the request jumps to the top of the priority list. It doesn’t always refer to a life-or-death situation, but it does mean the medical team needs something done as quickly as possible.

Newborns are always a reason to celebrate at the hospital. Parents usually rest happily next to their child as they receive congratulations from close relatives. However, the hospital is always prepared to handle extremely rare emergencies under "code pink."

If you hear a "Code Pink," it usually means a baby or young child is suspected of being abducted from the hospital. Within seconds, security officers respond, exits may be monitored or blocked, and staff begins following carefully rehearsed procedures. Although different hospitals sometimes use different color codes, Code Pink has become widely recognized across North America as one of the most serious alerts a hospital can issue.

If you’ve ever spent a few days in the hospital, you’ve probably noticed that some patients are walking up and down the halls, while others need help just getting out of bed. When a nurse refers to someone as a "walkie-talkie," it’s actually good news.

This informal expression refers to patients who can walk on their own, use the bathroom without assistance, and handle most basic tasks independently. It’s not an official medical term, of course, but it’s commonly used among healthcare workers because it quickly tells the next shift that the patient requires less hands-on care than many others.

As nurses change shifts, you’ll often hear them give a quick report about each patient. One person may only need medication, while another is described as a "total."

The term is short for a patient who requires total care. They may need help eating, bathing, getting dressed, turning in bed, or moving from one place to another. Although the expression sounds impersonal, it’s simply a practical way for caregivers to communicate how much assistance someone needs.

Most people hear "frequent flyer" and think of an airline reward program. And that’s correct, but in an emergency room, the phrase has a very different meaning.

A frequent flyer is an informal nickname for patients who repeatedly return to the hospital, often due to chronic illness, recurring medical conditions, or other ongoing health issues. Behind the light-hearted nickname is often a difficult reality. Many of these patients are simply dealing with medical problems that require regular emergency care, and the expression is just a way to make the experience a bit lighter among the familiar faces of doctors and nurses.

Not all codes are for patients. The next time you’re in a hospital, look closely at what the nurse is pushing from room to room. It may look like a small rolling desk with a computer on top. Staff often call it a "WOW," short for "workstation on wheels."

As hospitals switched from paper charts to electronic medical records, these mobile computers became essential. Nurses use them to review test results, scan medications, update patient charts, and check doctors’ orders without leaving the bedside. The name sounds funny, but the technology helps caregivers spend more time with patients instead of walking back and forth to a nursing station.

After getting a shot or having blood drawn, most patients never think about where the used needle ends up. It certainly doesn't go into an ordinary trash can.

Hospitals place needles, scalpels, and other sharp medical instruments into special containers designed to prevent accidental injuries. These sturdy, puncture-resistant boxes are sealed when full and safely disposed of in accordance with strict health regulations. This not only protects nurses, but it also protects cleaning crews, waste handlers, and even the public from dangerous needle sticks. It’s one of the most important safety measures in every hospital, even though most patients never notice it.

If you’ve ever watched a medical drama, you've probably seen a patient become so agitated that several staff members rush into the room. In situations like that, a doctor or nurse may ask for a "B-52." But the name has nothing to do with numbers themselves; it actually comes from a medicine.

B-52 is hospital slang for a fast-acting injection used to calm down patients who are severely combative or at risk of harming themselves or others. The nickname comes from a commonly used combination of medications that usually include diphenhydramine, haloperidol, and lorazepam. It’s strictly reserved for when other methods of calming the patient haven’t worked.