Demoníaca translates to "demonic" or "devilish." It's a striking and less common word in everyday Spanish, making it stand out in song lyrics.
In the context of "RocknRoll," Cris MJ uses this word to describe a woman's wild and uninhibited side, urging her to "ponte demoníaca" (get demonic). It adds a provocative and edgy flair, suggesting a night of passionate and unrestrained fun, which aligns with the song's energetic and rebellious theme.
"RocknRoll" is Cris MJ's invitation to a night that doesn't stop until sunrise. He builds the whole track around one image, repeating "Vamos a bailar rock and roll" ["Let's dance rock and roll"] as a stand-in for going all out on the dance floor rather than a reference to the music genre: "Tú y yo juntos hasta que salga el sol" ["You and I together till sunrise"].
The verses stack up the flash of a big night out — "Modelo europea, los carros europeo'" ["European model, the cars are European"] and "Súbete al Meche, ponte demoníaca" ["Hop in the Benz, turn demonic"] — paired with a partner he calls "mi diabla en minifalda" ["my she-devil in a mini-skirt"]. Under the bravado he's upfront about what this is: "No es que no te ame, pero te soy sincero" ["It's not that I don't love you, I'm just being honest"] — a song about one wild night, not a promise past it.