If you’ve spent any time on TikTok lately, you may have heard kids shouting “six-seven!” or seen the phrase popping up in captions and comments. To many adults, it sounds like it should carry some kind of hidden meaning or inside joke. Surprisingly, it doesn’t mean anything at all. That’s exactly the appeal—its randomness makes it funny, energizing, and easy for anyone to join in.
The trend began after hip-hop artist Skrilla released his song Doot Doot in December 2024, which includes the offhand lyric, “6-7, I just bipped right on the highway.” Nothing about the line was meant to stand out, but TikTok quickly latched onto it. Within weeks, the phrase became a viral soundbite across millions of videos.