Vacílalo is a popular slang command that doesn't have a single, direct translation. It comes from the verb vacilar and in this context means 'to enjoy it', 'live it up', or 'get into the groove'. It's a word you'll hear often in energetic reggaetón and salsa music.
In "Date La Vuelta," the artists shout 'Vacílalo, vacílalo' to invite everyone to let loose and feel the music on the dance floor. It perfectly captures the fun, party-like atmosphere of the song and is a fantastic word to learn for sounding like a native speaker.
This song is a fun, flirty invitation to the dance floor. Luis Fonsi, Nicky Jam, and Sebastián Yatra are all trying to get a woman's attention on what they call a "noche... tan perfecta" [a perfect night]. The main request is simple and direct: "Date la vuelta, mami" [Turn around, baby]. They want her to show off for them and let loose, telling her, "Suéltate el pelo para mi" [Let your hair down for me].
Each artist tries to win her over with compliments and big promises. They admire her short dress and promise to take her anywhere she wants, from Puerto Rico to Cartagena. Nicky Jam even says she brings out his wild side: "Yo vine normal y ella me sacó el animal" [I came here normal and she brought out the animal in me]. It's a playful competition to see who can convince her to keep dancing just for them.