Casse la démarche literally translates to "breaks the walk". In modern French slang, it's a huge compliment describing someone's unique and confident swagger—the cool way they carry themselves.
In the song, Vegedream uses this phrase to hype up the French defender Samuel Umtiti, whose celebratory walk became famous during the 2018 World Cup. It's a perfect example of popular slang used to capture the celebratory, confident energy of the team.
This song is a massive celebration! It was made to honor the French national football team, known as Les Bleus (The Blues), after they won the 2018 World Cup. The title and main chorus, "Ramenez la coupe à la maison" [Bring the cup home], became the victory chant for the whole country. The song points out that this win came exactly twenty years after France's last World Cup victory in 1998, with the line "Vingt ans après, c'est le moment" [Twenty years later, it's the moment].
What makes this song so much fun is how it's basically a roll call of the team's heroes. Vegedream gives a shout-out to almost every player, highlighting their specific skills or personalities. He sings about Kylian Mbappé's incredible footwork: "Accélération, virgule, petit-pont, frappe" [Acceleration, elastico, nutmeg, shoot]. He praises Blaise Matuidi, who "contrôle le terrain" [controls the field], and gives a special chant to the beloved N'Golo Kanté. It's a pure, joyful tribute to a team that made its nation proud.