Cautivao is a colloquial, shortened form of "cautivado," which means 'captivated' or 'enthralled'. This informal spelling is common in reggaeton and urban Latin music, reflecting a more casual and authentic street language.
In "Esa Boquita," the singer uses this word to express how completely mesmerized he is by a woman's appearance and movements. He sings, "Me tienes cautivao, loco y desperao" (You have me captivated, crazy, and desperate), highlighting the intense effect she has on him. It's an engaging word that captures the song's passionate and infatuated tone.
“Esa Boquita” is J Alvarez's straightforward come-on to a woman he can't stop watching across the room. He opens by asking her name — "¿Cuál es tu nombre, acaso estas solita?" [What's your name, are you all alone?] — and admits she's left him speechless: "Me quedé sin palabras, cuando vi tu carita" [I was speechless when I saw your face]. The hook keeps circling back to the one detail that undoes him, her mouth: "Esa boquita me mata" [That mouth kills me]. By the second verse the hesitation is gone and he's pushing to leave the party together — "Ya no perdamos más tiempo, que estamos de prisa" [Let's not waste any more time, we're in a hurry] — before the track closes on a run of shout-outs to its producers and label.