Al carajo is a powerful and very common slang phrase in Spanish that means "to hell with..." or "screw it". It's a super expressive way to show frustration or to forcefully dismiss something or someone.
In this emotional song, the singer exclaims, "Al carajo todos esos besos que me regalaste" (To hell with all those kisses you gave me), angrily casting aside the memories of his past love. Learning this phrase is a great way to understand the real, passionate language used in modern Spanish music.
This song is the perfect anthem for when you're trying to convince yourself you're over someone, but you're not quite there yet. Marca MP's lead singer is going through all the stages of a breakup in real time. He insists, "Ya acabó todo ese tiempo tan bonito" (All that beautiful time is over) because "creo que siento que ya no te necesito" (I think I feel that I don't need you anymore). That little "I think I feel" says it all, doesn't it? He's trying to will the feeling into existence.
He swings from sweet memories of his ex falling asleep in his arms to angrily telling her, "Al carajo todos esos besos que me regalaste" (To hell with all those kisses you gave me). The most modern, and maybe the most painful, detail is when he sees she's posted a picture with someone new on her social media. He notes bitterly, "Si ni fotos mías tienes tu teléfono llenado" (when you don't even have your phone filled with my pictures). The song ends with him declaring "Hoy ya soy feliz" (Today I am happy), but after everything he's just said, you have to wonder if he's saying it more for himself than for anyone else.