Haut-le-coeur is a powerful French idiom that literally translates to "a rising of the heart". It's used to describe a strong feeling of nausea or revulsion.
In this song, Mylène Farmer sings that after all the pain and lies, the only feeling she has left is a haut-le-coeur. It's a visceral and poetic way to express her ultimate disgust for the person she's addressing, making it a very memorable phrase to learn.
Mylène Farmer’s “À Tout Jamais” is a darkly theatrical breakup anthem where the singer rips off every disguise. From the first lines, masks shatter, “anthrax dust” creeps into wounds, and a manipulative “demon” toys with her emotions. The verses paint a night-marish picture of a toxic love that lies, consumes, and leaves her doubting and bleeding. Farmer’s imagery feels almost cinematic: you can sense the smoke, the heat, and the chill of someone who thrives on control.
Then, in a burst of raw rebellion, the chorus arrives like a flamenco-stomped battle cry: “Fuck you too, à tout jamais.” It is both a funeral (“Requiem”) for that poisonous bond and a fearless rebirth. No more “sorry, sorry,” no more apologies burned into her flesh. She kicks the ex-lover—and his sinister “double ami” twin persona—straight back to the “inferno,” walks away unafraid, and claims her own heart. The song celebrates shedding toxic ties, finding strength in self-liberation, and starting over with fire in your veins and zero regrets.