Six-seven (also written 6-7 or 67) is a silly chant kids and teens say, even when it doesn't “mean” anything specific. It's kind of like shouting a sound effect: the point is the energy and the shared joke, not a specific idea.

It took off online in 2025, and over time it became a flexible meme people could use anywhere. A classic part of “six-seven” is the hand gesture: you hold your hands out and bounce them up and down like a little seesaw, as if you're weighing two invisible objects.

Six-seven is a great example of how language really works: words aren't issued by a high authority. People invent them, copy them, remix them, and if enough people use them in a similar way, they stick. Dictionaries usually show up afterward to write down what people are already saying, not to grant permission but to keep a record.