The trend exploded after hip-hop artist Skrilla released the song Doot Doot in December 2024, rapping, “6-7, I just bipped right on the highway (bip, bip).” Since then, over a million TikTok videos feature the phrase, used as a response to everything from “what’s that smell?” to “what time is it?”

TikTok teacher Mr. Lindsay explained, “It’s just a reference to a meme. There’s no real meaning—it’s a number that’s fun to say, often with hand motions.” While young audiences find it hilarious, teachers are less amused. Elementary teacher Kaitlyn Biernacki shared that when asking a math question, students responded with “six” and then “6-7,” derailing the lesson entirely. Similarly, middle and high school teachers report classes chanting “6-7” during counting exercises, prompting some to ban the phrase in their classrooms.

Despite the chaos it causes in schools, the trend shows how quickly memes can spread and capture a generation’s imagination. If you’re confused, don’t worry—you’re not alone. “Six-seven” isn’t meant to make sense; it’s just a playful piece of Gen Z humor that continues to entertain online.