acurruco is the first-person conjugation of the verb acurrucarse, which means "to cuddle" or "to snuggle up". It's a beautifully cozy word that you don't hear every day, evoking a feeling of warmth, comfort, and safety.
In "Tutu", Camilo sings "yo me acurruco solo contigo" (I only snuggle up with you), using this tender word to express an intimate and special connection. Learning this word is perfect for anyone who wants to express affection in a sweeter, more specific way.
Camilo isn't trying to be a poet in "Tutu," and he says so right at the start: "Yo no sé de poesía / Ni de filosofía / Sólo sé que tu vida / Yo la quiero en la mía" (I don't know about poetry / Or philosophy / I only know that I want your life in mine). This song is a super direct and sweet declaration of love. He's completely smitten and can't imagine life without this person, admitting he doesn't know "cómo hacer pa' no quererte" (what to do to not love you). The chorus is simple and catchy, insisting there's "nadie como tú tú" (nobody like you you) and that she has him "cucu" (crazy).
He uses some really fun, modern comparisons to describe their bond, like "Estamos online como YouTube / Conectamos como Bluetooth" (We're online like YouTube / We connect like Bluetooth). The song is full of cozy, affectionate promises, like wanting to cuddle up and turn the air conditioning way down just to have an excuse to be close. He says, "Pongamos el aire en dieciséis pa' morirnos de frío / Y vente pa'l lado mío / Que mis besitos de pronto te sirven de abrigo" (Let's put the air on sixteen to die of cold / And come to my side / So my little kisses can maybe serve as your coat). It's a playful, lighthearted pop song about being so in love that nothing else matters.