Acicale is a stylish word that means "grooming" or "sprucing up". It comes from the verb acicalarse, which means to get all dressed up and make yourself look sharp, often to impress someone.
In the song, Beéle sings, "Yo sabiendo que tú vienes, ando con porte y acicale" (Knowing you're coming, I walk with poise and style). He uses acicale to paint a picture of him putting in extra effort to look his best, hoping to catch the eye of the person he's singing to before they have to leave.
This song is all about that tense moment when you're with someone you're attracted to, and you know one of you has to leave soon. Colombian singer Beéle tries to play it cool, singing, "Estoy intentando / Que no se note que más me estás gustando" (I'm trying / to hide that I'm liking you more). He sees a contrast between them—"Tú coqueta, yo bien coleto" (You're a flirt, I'm a bit rough)—but he can't stand the thought of the night ending without something happening. The whole song builds around one simple, urgent idea: "No me daría igual / Que pueda irme sin primero tus labios besar" (It wouldn't be the same to me / If I had to leave without kissing your lips first).
As the song goes on, the requests get bigger. It's not just a kiss he wants. He also wants a promise: "júrame que nos vamos a volver a ver" (swear to me that we'll see each other again). He even suggests keeping their connection a secret, hinting that maybe one of them is already in a relationship with the line, "Aunque tengas algo afuera, aquí nadie va a saber" (Even if you have something going on outside, nobody here will know). It's a classic reggaeton story of attraction, urgency, and a little bit of drama.