Duchesse translates to "duchess", a noble title for a female ruler or the wife of a duke. It's an elegant and somewhat old-fashioned word not commonly found in modern rap lyrics.
In this song, Booba uses "ma duchesse" as a term of endearment for his romantic interest, elevating her status and adding a touch of regal charm to his plea to escape with her: "Fuyons d'ici ma duchesse" (Let's flee from here, my duchess). This unexpected use makes the word stand out and adds an intriguing layer to the song's narrative.
Booba's "U2K" with Twinsmatic is a wild ride, all about living in the moment and leaving the past behind. The lyrics are super direct, with lines like "Faisons-le toute la nuit, fumons toute la weed" [Let's do it all night, let's smoke all the weed] setting a hedonistic tone. There's a strong sense of moving on from a past relationship, as he repeatedly says, "But you ain't the same girl that I used to know" and "You are alone now." It feels like he's telling this person they've changed, and not necessarily for the better, while he's still the "realest around here."
He's also all about escaping the mundane and the critics. "Fuyons d'ici ma duchesse" [Let's flee from here, my duchess] paints a picture of wanting to get away from everything with someone special. He dismisses his detractors with "Ils ne font qu'aboyer, brasser de l'air" [They only bark, stir up air], and even throws in a funny jab at governments, calling them "Louis de Funès." It's a confident, almost rebellious track about enjoying life on your own terms, even if it means leaving some people in the dust.