No No No It's Not Random Gibberish. If you've spent any time around a tween or teen lately, you've probably heard it - the strange, half-finished words and numbers your kids toss around like they're speaking a different language. Sigma. 6-7. Sometimes with a hand gesture, sometimes with zero context, always with a confidence that leaves you confused. Every generation has its slang, sure. But this one feels different - it feels like it came out of nowhere. Here's the secret, though: it didn't. These words have a wild, tangled origin story that most people - even the kids using them - know nothing about. Let's dig in.
First, the Word on Everyone's Lips: "Sigma"
Walk into any school playground and you'll hear it sooner rather than later. "Sigma" - usually delivered with a straight face as the ultimate compliment. A sigma person is cool, self-reliant, a bit of a lone wolf. But here's where the mystery begins: why a Greek letter? And why sigma of all letters? The answer takes us somewhere nobody expects - a zoo.
It All Starts With Wolves (And a Mistake)
Rewind to 1947. A German animal behaviorist named Rudolph Schenkel studied a group of wolves locked up together at the Basel Zoo in Switzerland. Those wolves weren't a family - they were strangers thrown into one pen - and they fought. One was nastier than the rest, so Schenkel called it the "alpha." Below it came the "beta," and so on down a neat little ladder.
That research was flawed - those captive wolves fought because strangers don't get along, not because a "pack order" was hardwired into nature. But the damage was done. In 1970, a young scientist named L. David Mech published a bestselling book on wolves that leaned on Schenkel's work. The idea of the "alpha male" - the dominant top-dog - spread into popular culture like wildfire and stayed there for more than fifty years. The kicker? Mech himself later studied real wild wolf packs and realized he'd got it wrong: wild wolves are just families, mum and dad leading the pups, no fighting for the throne. He spent decades trying to take the book out of print. But by then, the myth of the alpha was unstuck from its science - and it was about to get a sibling.
Enter the "Sigma" - a Letter With a Face
Fast forward to the internet age. The "manosphere" - online communities obsessed with masculine hierarchies - took the alpha/beta ladder and stretched it. In 2010, an author known online as Vox Day coined the term "sigma male" on his blog: the lone wolf, the introverted alpha who succeeds on his own terms without playing the status game. He even pointed to actor Clint Eastwood's movie characters as the perfect example.
For a decade, the word stayed obscure, living quietly in the corners of the internet. Then in January 2021, a single tweet by a user named Lily Simpson sent people diving into it - and the internet, being the internet, ran with it. Media picked it up, memes exploded, and within a couple of years "sigma" had jumped out of the niche forums and into the mouths of a generation that barely knew where it came from. By 2023, the #sigmamale tag was racking up hundreds of thousands of posts on TikTok, and the "sigma face" - that exaggerated determined look - became a staple of videos everywhere.
So the next time a kid calls their friend a sigma, they're quoting, second-hand-through-memes, a concept that began with a 1947 study of captive wolves and a wrong idea its own author tried to bury. Now that's a story hiding behind one word.
Now, the Number Nobody Can Explain: "6-7"
If "sigma" at least sounds like it means something, "6-7" is something else entirely. No one - not even the kids shouting it - can pin down what it means. It's been called Dictionary.com's Word of the Year for 2025, ahead of words like "digital" trends from the same year, precisely because it's a mystery. So where did two random numbers with a hand gesture come from? Buckle up - this one has chapters.
Chapter One: The Rap Song (2024)
It started with a drill rap track called "Doot Doot (6 7)" by a Philadelphia rapper named Skrilla. It made its rounds unofficially in December 2024 before an official release in February 2025. In the middle of the song, as the beat drops, Skrilla raps a line that repeats "6-7". Nobody is entirely sure what he meant by it - some say it's a nod to 67th Street in Philadelphia or Chicago, but the rapper himself never gave it a fixed meaning. It's just... there. And that emptiness, as it turns out, was the secret weapon.
Chapter Two: The Basketball Edit (Late 2024)
Creators on TikTok and Instagram grabbed the audio and layered it over basketball highlight reels - especially of LaMelo Ball, an NBA star who is, you guessed it, exactly 6 foot 7 inches tall. The number and the athlete locked together in the internet's brain, and "6-7" started popping up everywhere as a hype phrase with no real job to do.
Chapter Three: The Kid Who Made It Fuel (March 2025)
Then came the moment that sealed it. In March 2025, a YouTube video of a youth basketball game showed a young boy on the sidelines named Maverick Trevillian - soon nicknamed the "67 Kid" - screaming "six, seven!" with a full-body hand gesture. It was spontaneous, a little ridiculous, and absolutely perfect for the internet. The clip took off, and suddenly a number with no meaning became one of the most recognizable sounds in the world. Even the Pope joined the trend, and political figures in the US, the Philippines, and the UK got in on it - some of whom had to walk it back when schools banned the gesture.
So... What Does "6-7" Actually Mean?
Here's the honest answer: nobody knows, and that's the whole point. Researchers have compared it to secret kid languages like Pig Latin or the "Cool S" - it works not because it carries meaning, but because saying it proves you're in the group. It's an in-joke, a badge, a way to signal belonging without saying a word. Kids don't even use it the same way - sometimes it means "so-so," sometimes it's just something to yell. The meaninglessness is the meaning.
That's also why so many adults are Googling it. Since the summer of 2025, searches for "6-7" climbed more than sixfold - parents, teachers, and older siblings trying to decode the noise. It turns out the people most desperate to understand Gen Alpha slang are the ones standing right outside the circle.
Why Does Every Generation Have Its Own Secret Code?
Step back and you'll see the pattern. Millennials had "YOLO" and "420." Gen Z had "cheugy" and "sus." Now Gen Alpha has "sigma," "6-7," and a whole catalog of "brainrot" words like "skibidi." Kids have always used slang to build borders around belonging - that part is as old as time. It's a bit like those mystery songs and phrases that suddenly grip the whole world out of nowhere - remember how a stray line from nowhere became a global catchphrase in the story behind Moye Moye? The same kind of accident is at work here. What changed is the speed. Older generations built slang slowly, through classmates and schoolyards. Today's kids build it through algorithms, and a new word can sweep the entire planet in a matter of hours, not years. Linguists point out that a term like "6-7" can go from nowhere to everywhere in about two days.
So when your kid says something you don't understand, take a breath. It's not a sign the world is ending - it's a sign they're finding their people. The words may be gibberish, but the instinct behind them is as old as language itself.
The Real Takeaway
Here's the part I love about all this. "Sigma" traces back to a flawed 1947 wolf study and a discredited bestselling book. "6-7" traces back to a Philadelphia rap song, a basketball star's height, and one excited kid at a youth game. Two of the most confusing words in a whole generation's vocabulary have these weird, wonderful, gloriously human origin stories behind them - stories the kids using them have no idea about.
And that, right there, is the beauty of language. It's not static. It's alive - messy, drifting, borrowed, and remade by every generation in its own image. The words feel like nonsense until you find the thread, and once you do, a whole world opens up. So go on - next time someone's kid shouts "6-7" at you, just smile. You don't have to get the joke. You're already in on the secret.