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Public SpeakingSeptember 26, 20269 min read

Your Kid Talks to Adults Like It's a Group Chat

Your teen drops slang, 'bro,' and trailing 'and stuff' into every conversation, including the ones that count. Shifting how you talk for a teacher or interviewer is a real skill. Here's how to build it without telling your kid their normal voice is wrong.

N
Noah Bryant

Founder, Rhetrix

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When your kid talks to a teacher, an interviewer, or your boss the exact same way they talk to their friends, the fix isn't banning slang. It's teaching them they have more than one voice, and that a smart person picks the right one for the room. Linguists call this code-switching, or shifting register, and it's a skill every effective adult uses without thinking. Most kids have never once been told it exists.

Here's the scene. Your kid is warm, funny, quick with their friends. Then an adult they don't know well asks them a real question, and out comes, "Yeah no it was lowkey pretty good I guess, like, we just kinda did the thing and stuff." Bro shows up. Everything trails off into "and stuff." Every other word is "like." And the adult, who was ready to be impressed, quietly downgrades their read of your kid to "seems like a nice enough kid, kind of scattered."

Your kid didn't say anything wrong. They just used the group chat voice in a room that needed a different one.

Why does my kid talk to adults the same way they talk to friends?

Because it's the only voice they've practiced.

Think about where your kid spends their talking hours. Group chats. Voice chat on games. Lunch tables. TikTok comments read out loud. All of it runs on the same casual register, packed with slang, filler, and half-finished sentences that work fine because everyone in that world speaks it. It's efficient. It signals belonging. Among friends, "it's giving desperate" says more, faster, than a full grammatical sentence would.

The problem is your kid got thousands of reps in that one register and almost none in any other. So when a moment calls for a different voice, they don't have one loaded. They reach for the only thing they've got, and the only thing they've got is the group chat.

There's a second piece under it. A lot of kids genuinely don't hear the difference. To them, "lowkey" and "honestly" are the same word. "Bro" is just punctuation. They're not being disrespectful. They literally can't hear that the register shifted, because they've never had to.

And adults do this constantly without noticing. You don't talk to your best friend the way you talk to a doctor, or to your kid the way you talk to your accountant. You switch automatically. That switch is a skill you built over decades of being in rooms where it mattered. Your kid hasn't been in those rooms yet, so the switch isn't built.

A parent I work with in East Cobb had a son who was genuinely sharp, top of his class, real opinions. In a mock interview he answered a question about his favorite subject with, "I mean, chemistry's kinda fire, not gonna lie." He wasn't joking. That was just his voice, the only one he had. The interviewer would have written down "casual" and moved on, and it would have had nothing to do with how smart he actually was.

What does slang and filler actually cost your kid?

It costs credibility, in the rooms where credibility is being handed out.

Here's the thing about an adult who's evaluating your kid. A teacher deciding how much to invest in them. An interviewer writing a report. A coach picking a captain. A boss deciding whether to hire the teenager. They're all making a fast judgment about maturity, and register is one of the loudest signals they read. A kid who can shift into a clear, grown-up voice sounds ready for what comes next. A kid who can't sounds younger than they are, even when their ideas are older.

And it's not that slang is bad. Slang is great. It's alive, it's creative, and it's exactly right with friends. The cost shows up only when a kid can't turn it off. A teenager who says "no cap" in an interview isn't in trouble for the word. They're in trouble because the word tells the interviewer they can't read a room and adjust, and reading a room and adjusting is most of what adult communication is.

The filler does the same damage from a different angle. "Like," "kinda," "I guess," "and stuff," "or whatever." Each one shaves a little certainty off whatever your kid just said. String five of them into one answer and a confident kid sounds unsure of things they actually know cold. The idea was solid. The packaging leaked all the confidence out of it.

It compounds, too. A kid who sounds scattered gets treated as scattered, which means they get fewer chances to prove they're not, which means fewer reps in the rooms that would build the very skill they're missing. The one-voice kid stays a one-voice kid unless somebody points it out.

How do I teach my kid to switch voices without making them feel judged?

Start by telling them their normal voice isn't the problem. This matters, because the second a kid hears "stop talking like that," they think you're attacking how they and their friends talk, and they shut down. You're not taking a voice away. You're adding one.

Give it a name they'll actually use. Call it the "school voice" or the "interview voice" or the "adult voice." The point is to make the switch a conscious thing they can flip on, instead of a vague command to "sound more mature." A kid who knows they have two voices can choose. A kid who's just been told to talk better has no idea what to do next.

Then make them hear the difference, because most kids can't until you show them. Take one sentence and run it both ways out loud. Group chat: "Yeah it was lowkey fun, we just kinda hung out and stuff." Adult version: "It was fun, we spent the afternoon downtown." Same content. One sounds fifteen, one sounds ready. When a kid hears the two side by side, the switch stops being abstract. This is the same thinking on your feet work that runs through everything we do, just pointed at word choice and audience.

Drill it low-stakes. Have your kid tell you about their day twice, once in full group chat mode and once in adult mode. Make it a game, not a correction. The exaggerated group chat version usually makes everyone laugh, which is the point, because now your kid can hear exactly what they're switching out of. Do this a few times a week and the switch starts to feel like something they own instead of a rule you're enforcing.

Target the two worst offenders first, not all of them. For most kids that's the trailing "and stuff" and the wall of "like." Have them practice finishing a sentence instead of letting it dissolve into "and stuff," and practice one clean pause where a "like" wants to go. Two fixes are doable. A ten-point list of banned words just makes them self-conscious and quiet.

And give them the rooms. The switch only sticks with reps in front of unfamiliar adults, because that's where it counts and that's where it's hard. Let your kid order for themselves at the restaurant. Have them make the call to the dentist. Have them answer the neighbor's question instead of you jumping in. Every one of those is a rep in the adult voice, and a kid who's done fifty of them walks into an interview with the switch already built.

One warning. Don't correct them mid-sentence in front of other people. Nothing kills a kid's willingness to practice faster than getting flagged for "like" while they're trying to talk to their grandmother. Coach it beforehand, let them run it, and give one note after. The goal is a kid who reaches for the right voice on their own, not a kid who freezes because they're scared of saying the wrong word.

Quick Answers

Q: How do I get my teenager to stop using slang in interviews and with teachers?

Don't ban the slang, name a second voice instead. Teach them they have a "group chat voice" and an "adult voice," then practice switching between them out loud so the shift becomes a choice they control rather than a vague order to sound more mature.

Q: Why does my kid say "like" and "and stuff" so much?

Because casual register is the only one they've practiced, and filler words are the default packaging of that register. Each filler shaves a little certainty off what they said, so a confident kid ends up sounding unsure. Target the two worst offenders first rather than all of them at once.

Q: Is it bad for teenagers to use slang?

No. Slang is creative and exactly right with friends. The problem is only when a kid can't turn it off for a teacher, interviewer, or boss, because that signals they can't read a room and adjust, which is most of what adult communication requires.

People Also Ask

Q: What is code-switching in communication?

It's shifting how you talk depending on who's listening, also called changing register. Everyone does it, adults included. You talk to a close friend differently than to a doctor without thinking about it. It's a learned skill built from being in rooms where the right voice mattered, which is exactly why teenagers haven't fully built it yet.

Q: At what age should kids learn to adjust how they speak for different audiences?

Middle school, roughly ages 11 to 13, is a strong window, because that's when graded discussions, presentations, and first interviews start showing up while heavy online socializing is ramping up too. Building the adult voice before high school interviews raise the stakes means the switch is already automatic when it counts.

Q: Will teaching my kid a more formal voice make them sound fake or stiff?

Not if you do it right. The goal isn't a robotic, over-formal voice, it's a clear, natural one without the filler and slang that leak confidence. A kid who can drop the "likes" and finish their sentences sounds more like themselves, not less, because their actual ideas finally come through cleanly.

Helping kids build a second voice for the rooms that count, without making them feel their normal one is wrong, is part of what we do at Rhetrix, with in-person small-group coaching for grades 6 through 12 across North Atlanta. If you're wondering whether it's a fit for your kid, our FAQ walks through how the cohorts run and what to expect.

Help your student build these skills for real.

Rhetrix offers cohort-based public speaking coaching for students in grades 6–12 in the North Atlanta area.

See our programs →

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