Dada in French refers to a hobby or an obsession, something one is very fond of doing. It's an interesting word because it sounds playful and childlike, yet it carries a deeper meaning of a strong personal interest.
In the context of the song, the line "c'est devenu mon dada" (it has become my dada) suggests that something, perhaps making money or achieving success, has become the artist's primary focus or passion. It's a unique way to express dedication and drive.
Naza's "PTain de mRde" throws us right into a wild night, a "vida loca" [crazy life] where the vibe is so good you can't miss it. He talks about people being speechless, maybe from awe or surprise, as old demons surface. It sounds like a party where things get a little out of control, with Naza wondering where someone has been all this time: "mais toi ou été du tout ce temps la mort" [but where have you been all this time, death?].
The song really gets going with the repeated line, "ce soir ce sont des copains de merde" [tonight they are shitty friends], which is pretty blunt! He's talking about always needing money, "j'ai toujours de remettre à la maille" [I always have to get back to the money], and then tells someone to move, saying it's become his thing: "bouger les mois c'est devenu mon dada" [moving is my hobby now]. It's a fun, energetic track about living it up, dealing with some less-than-great friends, and always being on the grind for cash.