Diablita literally translates to "little devil" (female). It comes from the word diabla (devil), with the diminutive suffix -ita added to make it sound smaller, more mischievous, or even affectionate.
In the song, this playful slang is used to describe the woman's transformation. After being betrayed and heartbroken, she sheds her innocent image and embraces a wild and seductive side, becoming a diablita who is now in control of her own desires.
Heartbreak turns into total nightlife chaos here. Puerto Rican trap artist Anuel AA joins forces with bachata superstar Romeo Santos to tell the story of a girl who got played by her ex and decided being the sweet, quiet girlfriend was over. The hook lays out her entire plan: “Ella quiere beber, ella quiere bailar / Su novio la dejó y lo quiere olvidar” ("She wants to drink, she wants to dance / Her boyfriend left her and she wants to forget him"). Instead of staying home crying, she orders twenty bottles of pink champagne, ignores every pushy guy trying to talk to her, and heads out with the singers to seek revenge in the club.
What makes the track stick is how blunt it gets about moving on. Anuel jokes that “la buena es la difunta” ("the good girl is deceased"), pointing out that she buried her innocent past life right in the cemetery alongside her old relationship. You'll hear plenty of street slang along the way: a foolish guy gets brushed off as a bobolón (fool/clown), partying is called rumbear, and luxury shows up fast when Romeo offers to pick her up in a high-end Phantom car. The lyrics are completely unbothered by feelings, treating a wild night out and a rebound fling as the quickest cure for a broken promise.