Serenita is the diminutive form of "serena," meaning calm or serene. The diminutive suffix "-ita" adds a touch of endearment or emphasizes a smaller, more delicate quality.
In the song, the artist uses "serenita" to describe a woman who appears outwardly calm and composed, contrasting with the wild lifestyle he leads. It's an interesting word choice because it hints at a deeper meaning, suggesting that her peaceful demeanor is particularly captivating to him amidst his chaotic world.
Calle 24 and Jorsshh bring us a song about a guy who's trying to change his ways for a special girl, but the party life keeps calling him back! He describes this girl as "mamacita" and "serenita" [calm and serene], looking just like her Instagram photos. He even says he's left behind the "desvergue, refuego, las putas" [mess, fire, the prostitutes] for her.
But it's not that easy to leave the wild life behind. He admits he's "culero" [an asshole] with other girls and that even smoking weed and doing drugs barely fills him up anymore. He's got a reputation for making money from bad things, and the "desmadre" [chaos] of parties, champagne, and "locas" [crazy girls] in his bed is hard to resist. He's waiting for "la buena" [the good one] to come along, but until then, he's still out there "pisteando y tronando botellas" [drinking and smashing bottles].