Every generation inherits a language built on shortcuts, images, and cultural memories that made perfect sense when they were coined. For Baby Boomers, idioms were the vocabulary of everyday life, passed down through workplaces, dinner tables, and evening news broadcasts. They rarely needed explaining. You just picked them up over time.
Boomers, born between 1946 and 1964, grew up before the digital age, relying on face-to-face communication, print media, and more formal modes of expression. Gen Z, born from the mid-1990s onward, grew up with the internet, smartphones, and social media, leading to rapid changes in language and communication styles. The result is a gap that occasionally makes two people speaking English feel like they’re speaking entirely different languages. These are eight of the most common offenders.
1. “Burning the Midnight Oil”
“Burning the midnight oil” speaks to staying up late into the night, typically due to work or study pressures. The idiom harkens back to a time when lamps burned oil late into the night as fueling fires for working or studying well past sunset was commonplace, emphasizing diligence or the necessity of work over rest. For a Boomer manager, it’s a perfectly natural way to compliment a hardworking employee.
For Gen Z, the phrase can land with a genuinely puzzled pause. If you didn’t grow up around oil lamps or even hear the phrase in passing, the image is vivid but confusing. Why is someone burning oil? Is this a fire hazard? In a multigenerational workplace, misunderstandings stemming from language differences can create unnecessary friction, where younger employees might not understand idioms that feel like second nature to older coworkers.
2. “Hit the Sack”
“Hit the sack” means to go to bed. The idiom evokes an image of a sack filled with soft, comforting hay, a throwback to times before modern mattresses were commonplace. “Hit the hay” carries the same meaning and is often used interchangeably, both expressions conjuring images of simpler times when beds were often makeshift arrangements that involved sacks of straw.
That agricultural context is completely invisible to someone who’s only ever slept on a memory foam mattress. A Gen Z listener hearing “I’m going to hit the sack” for the first time might picture someone punching a burlap bag, or simply wait for more context. It’s one of those phrases that sounds oddly aggressive for what is really just a quiet end to the day.
3. “Bite the Bullet”
“Bite the bullet” means to face a difficult situation with courage and determination, even if it’s unpleasant. It’s thought to originate from pre-anesthetic surgery on battlefields, where patients were reportedly given a bullet to bite down on during the pain. For Boomers, it’s a casual way of saying “just power through it.”
Taken literally by someone unfamiliar with the expression, the phrase is at best confusing and at worst alarming. Gen Z, raised in an era of direct digital communication, often prefers plain language over figurative shortcuts. Boomers tend toward a more straightforward and earnest tone, sometimes misinterpreting Gen Z’s expectations for plain speech. The reverse misunderstanding, Gen Z hearing Boomer idioms too literally, is just as common.
4. “Let the Cat Out of the Bag”
“Let the cat out of the bag” means to reveal a secret. For example, “She let the cat out of the bag about the surprise party.” The origin likely traces to market fraud in medieval times, when sellers would substitute a cheap cat for a valuable piglet in a sealed bag. The secret was exposed when the bag opened. Nobody dealing in hogs or piglets today, naturally.
When a Boomer casually drops this one in a workplace conversation, a younger colleague might briefly picture an actual cat in an actual bag and wonder what animals have to do with office gossip. Generational language differences can lead to humorous misunderstandings or even complete communication breakdowns. When “shade” is thrown, it might lead to a puzzled Boomer wondering about sunlight, and in reverse, a Gen Zer can be equally lost when the imagery is this old.
5. “Burning the Candle at Both Ends”
The phrase “burning the candle at both ends” means to overwork oneself by doing too many things, especially late at night and early in the morning. For example: “He’s been burning the candle at both ends and needs to take a break.” It paints an image of a candle being consumed twice as fast, which was a genuine concern in households that relied on candles for light.
Modern Gen Z listeners, who have never had to ration candlelight, may grasp the general mood of exhaustion in the phrase, but the specific image doesn’t land the way it once did. The phrase arrives with a sense of warning that can feel oddly poetic to younger ears. It’s not wrong, it’s just… very old. And that gap in cultural reference is exactly where the confusion lives.
6. “That Costs an Arm and a Leg”
The idiom “costs an arm and a leg” simply means something is very expensive. For example: “That new smartphone costs an arm and a leg.” This is one of the more widely known Boomer-era expressions, and Gen Z does often pick up on its meaning from context. Still, when it’s heard for the first time without that context, the literal image of trading limbs for goods is genuinely unsettling.
Social media has given Gen Z a culture of deadpan humor, and they’ve been known to play along with the literal interpretation for comedic effect, asking follow-up questions like “which arm?” with a completely straight face. Gen Z prefers fast, informal communication through texting, memes, and short videos, and their tone is often humorous and ironic. Playing up a literal reading is sometimes less about confusion and more about irony.
7. “Keep on Trucking”
Gen Z might be baffled when a Boomer advises them to “keep on trucking.” The phrase became a cultural staple in the late 1960s and 1970s, meaning to persevere and keep moving forward regardless of obstacles. It was everywhere in that era, from bumper stickers to folk songs, and carries a kind of optimistic, blue-collar resilience that felt very much of its time.
For Gen Z, the phrase has zero pop culture footprint. They didn’t grow up with the references that made it feel motivating rather than confusing. Hearing a grandparent or Boomer manager say it as genuine encouragement can feel like receiving advice from a very enthusiastic stranger. Older generations always try, and sometimes fail, to catch up with slang, but the reverse is equally true when the original slang is this generationally specific.
8. “Don’t Reinvent the Wheel”
A Boomer manager might remind the team, “Don’t reinvent the wheel,” meaning there’s no need to redo what already works efficiently. It’s a practical expression that makes good logical sense, and this one actually tends to land better with Gen Z than most on this list. The wheel is not a historically distant object. Still, in a generation that values disruption, innovation, and rethinking systems from scratch, the phrase can feel like an instruction to stop thinking creatively.
Where Boomers hear sensible pragmatism, Gen Z can hear something that sounds like “don’t bother improving things.” The words are clear. The intent behind them is what gets lost in translation. Today’s workplace is a melting pot of Baby Boomers, Gen X, Millennials, and Gen Z, each bringing unique perspectives and their own language. While generational diversity can drive innovation, it can also spark miscommunication, especially when words and phrases don’t quite translate across age groups.
Language is always a product of its moment. The phrases Boomers grew up with were vivid and purposeful when they were coined, rooted in physical labor, candlelight, and a world where metaphors came from daily life rather than a screen. Gen Z isn’t being obtuse when these phrases don’t land. They’re simply working from a different set of cultural references, one shaped by algorithms and memes rather than oil lamps and trucking culture.
The real takeaway isn’t that one side is right and the other is out of touch. It’s that language carries history, and sometimes the most ordinary conversation is quietly hauling decades of context that the other person was never handed. A little patience on both sides goes further than any glossary.
Leave a Reply