Having good manners was a major part of growing up as a boomer or Gen Xer.
There were rules for how you spoke to adults, how you greeted people, how you sat at a table, and what you did when company came over.
The rules weren’t optional. Ignoring them got you a look, a correction, or worse, and eventually they became automatic.
Gen Z didn’t grow up in that system. Their parents weren’t negligent. The world those rules were built for had already changed by the time they arrived.
The result is a generation that watches an older person do something with obvious intention: the handshake, the formal address, the pause before eating, and has no idea what it means or why it matters.
That gap isn’t laziness. It’s a missing manual.
1. Calling someone “sir” or “ma’am” until you’re told to stop
For boomers and Gen X, this was drilled in early. An adult was “sir” or “ma’am” until they told you otherwise. A teacher was “Mr.” or “Mrs.” A doctor was “Doctor.” You didn’t decide when to go casual. They did.
Gen Z skips straight to first names with almost everyone, including people decades older, because to them formality doesn’t signal respect. It signals distance. And distance, in their social framework, is the opposite of warmth.
The older version assumed that respect is earned upward: you show it to people above you in age or position, and they release you from it when they’re ready.
The younger version assumes respect is mutual and default, and adding a title on top of it creates a barrier nobody asked for.
2. Looking someone in the eye and shaking their hand when you meet them
The handshake was a physical contract. A firm grip, direct eye contact, a beat of held attention meant I see you, I take you seriously, and I’m not going anywhere for the next three seconds.
Gen Z does the half-wave, the nod, occasionally a hug if they already know the person. The handshake feels ceremonial in a way that doesn’t match how they enter most rooms, which is casually, quickly, and usually mid-sentence about something else.
The confusion is real. They’re not trying to be dismissive. They just grew up in a world where meeting someone new usually happened online first, and by the time the in-person moment arrived, the formality felt redundant.
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3. Putting your phone away when someone is talking to you
This one generates the most friction. The older rule was simple: undivided attention is how you show someone they matter. You put the phone face down. You make eye contact. You do not glance at a notification while someone is telling you something important.
Gen Z grew up doing homework with a group chat going, music on, and three tabs open. Divided attention isn’t a distraction to them, it’s their default operating mode.
They can scroll and listen at the same time, and they know it, and they don’t understand why the older person across the table is taking it personally.
A Pew Research Center national survey found the generational gap on what counts as rude in public is huge.
Close to nine in ten adults over 65 said cursing out loud in public is rarely or never acceptable, compared with fewer than four in ten adults under 30.
The same split showed up across almost every behavior they tested. The generations aren’t just doing things differently. They’re working from different definitions of what “disrespectful” means.
4. Waiting for everyone to be served before anyone picks up a fork
A grandmother sets a plate in front of someone. That person reaches for a fork.
The grandmother’s eyes go wide, and the whole table goes still for a second, because the rule, so obvious it was never explained, is that nobody eats until everyone is sitting and every plate is full.
Gen Z eats in shifts. Dinner happens between 6 and 11 depending on schedules. Someone makes a plate and takes it to the couch. Someone else eats standing in the kitchen while looking at their phone.
The idea that eating is a synchronized event, with a starting gun nobody fires but everyone hears, never got transmitted.
5. Offering your seat to someone older without being asked
On a bus, in a waiting room, at a crowded gathering. Boomers and Gen X were raised to stand up automatically when someone older needed a seat. You didn’t wait to be asked. The asking would have been the failure.
Gen Z hesitates. They care, but they’re running a different calculation. Offering a seat to someone based on how old they look feels, to them, like an assumption about capability.
It could come across as kind. It could also come across as you look like you can’t handle standing.
So they freeze, and the older person reads the freeze as indifference.
Jonathan Culpeper, a linguist at Lancaster University, has studied how rudeness escalates between people. When one person reads another’s behavior as impolite, the exchange spirals: each perceived slight triggers a sharper response.
The older person doesn’t just notice the missing gesture. They read it as a small withdrawal, and everything after it shifts.
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6. Standing up when someone enters the room
The father stands when his daughter’s date walks in. A whole table half-rises when a new guest arrives at dinner. A man stands when a woman returns to the table at a restaurant. It was so automatic it barely registered as a choice.
Gen Z watches it happen and thinks: Why did everyone just move?
The rule made sense when introductions were events. If someone arrived at a gathering, it might be the only time you’d see them for weeks. Standing was the body’s way of saying I acknowledge that you’re here, and your presence changes the room.
Now that same person is on four group chats and saw your Instagram story two hours ago. The arrival doesn’t carry the same weight, and the physical response to it looks like a reflex from a different era, because it is.
7. Commenting on someone’s appearance as a compliment
You look great, have you lost weight? For boomers and Gen X, this was warmth. You noticed someone. You said so.
If a niece looked thinner or a colleague looked more put together, the comment was a gift; you were paying attention and offering approval.
Gen Z treats any unsolicited comment about someone’s body as a boundary crossed, and the research supports their instinct.
Weight-related comments, even positive ones, fuel body dissatisfaction, and the person on the receiving end may be dealing with an illness, a loss, or something they didn’t choose. The younger generation learned this. The older generation grew up before anyone said it out loud.
This is one of the few items on this list where Gen Z isn’t just confused by the older norm. They think it’s wrong. And on this one, the evidence tilts their way.
8. Starting an email with “Dear” and ending it with “Sincerely”
A twenty-two-year-old stares at a blank email to a professor. Do I write “Dear”? Is “Hey” too casual? What does “Best” even mean? Am I supposed to say “Sincerely” like I’m sealing a letter with wax?
A few generations earlier, the email format was borrowed directly from letter-writing, and letter-writing had been formal for centuries.
“Dear” was the standard opening for a written message to anyone you respected. “Sincerely” meant I meant what I said above. The scaffolding carried weight because written communication was rare enough to be ceremonial.
Email is closer to texting now than to letter-writing, and Gen Z treats it that way. A message that starts with “Hi” and ends with a name is their version of polite. To them, the whole structure reads as a costume.
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The manners made sense inside the world that made them
Every rule here was built for a specific set of conditions: smaller communities, fewer strangers, less mobility, and a reputation that traveled by word of mouth.
In that world, the handshake, the title, the pause before eating all did real work. They told the room who you were and how seriously you took the people in it.
Those conditions are mostly gone. Gen Z didn’t reject the manners. They arrived after the world that explained them had already moved on, and what they inherited was the form without the footnote.
That doesn’t make the older habits pointless, and it doesn’t make the younger confusion disrespectful. It just means the agreement that held the whole thing together is no longer something anyone signs automatically.
