Clavado literally means "nailed" or "stuck," but in Mexican slang it means being emotionally stuck on someone or unable to move on. In the song, "quedé clavado" means "I was really hung up on you," creating a memorable metaphor for heartbreak.
“Corazón Frío” is a blunt breakup song about someone who was hurt, got over it, and refuses to take their ex back. He admits, “Tú me dejaste lastimado” [You left me hurt], and says he was “clavado” [stuck on you or deeply affected], but only for a while. Now, he tells the ex to stop calling and accept responsibility: “fuiste tú quien la cagaste” [you were the one who messed up]. The slang makes his message sound direct and familiar, while “la neta” means “honestly” or “the truth is.”
The funniest and sharpest image is “ya eres un cero a la izquierda” [you’re now a zero on the left], an idiom for someone who no longer matters. He rejects tears as a way to fix the damage and says he has “un corazón duro y frío de a madre” [a very hard and extremely cold heart]. “De a madre” is Mexican slang that intensifies the phrase, similar to “extremely” or “as hell.” When he says, “Devoluciones yo no acepto” [I don’t accept returns], the breakup becomes a store-policy joke: she said goodbye first, and now there are no refunds. His final message is simple and firm: leave, because he does not love her anymore.