The chant comes from the Six Seven meme that spread on TikTok in 2025, linked to Skrilla's track Doot Doot (6 7) and to basketball player LaMelo Ball, who is listed at 6 feet 7 inches. Clips of kids and fans shouting the numbers back and forth made 67 into a standalone catchphrase with no real meaning beyond the reference. This longer 677777 version stretches that call into a loop, and creators keep reusing the original 67 because the joke works instantly for anyone who has seen the trend.