Arregaça comes from the verb arregaçar, which literally means to roll up (sleeves, pants). However, in Brazilian Portuguese slang, it's often used to mean to 'wreck', 'destroy', or 'tear up' something or someone, often with a sense of intensity or force.
In Jão's song, the line "Teu peito no meu, só bate e arregaça" (Your chest on mine, it just beats and wrecks me) uses arregaça to convey the overwhelming and almost destructive impact of the lover's presence. It's a vivid and impactful word that captures the emotional turmoil described in the lyrics.
Jão builds this one around a body he already knows is a warning sign. "Tua boca na minha, minha desgraça" [Your mouth on mine, my undoing] opens the song with the ending already decided, and he keeps circling back to the same image: "Com essa cara de quem vai me destruir" [With that face of someone who's going to destroy me]. He's not confused about what's happening to him. He's just doing it anyway.
The chorus is the fight between his head and his body. He admits "Você não ama ninguém" [You don't love nobody] and "Eu tenho medo de te perguntar / O que a gente é" [I'm afraid to ask you / what we are], so he already knows the answer. But every time he tries to walk, the same words come back: "Me deixa ir, me deixa ir, me deixa ir" [Let me go, let me go, let me go], asking someone else to do the leaving he can't manage himself. By the end he's stopped pretending it goes any other way and just says it straight: "'Cê vai me destruir" [You're going to destroy me].
Jão (from Brazil) first gained a following by sharing his covers online, eventually transitioning to original music. He quickly became known for his emotional pop songs, often exploring themes of love and heartbreak with a direct, honest style.