Perrengue is a very Brazilian Portuguese slang term that describes a difficult, uncomfortable, or embarrassing situation, often one involving financial or emotional struggle. It's a word that perfectly captures the feeling of being in a bind or having a tough time.
In this song, the singer uses it to describe the emotional suffering his heart went through after a breakup, implying that his ex-partner will experience a similar
This song is for anyone who's ever felt like they were the only one trying in a relationship. Gusttavo Lima lays it all out: he wanted peace, but his partner wanted war. He says, "Até onde eu sei, relacionamento é a dois" (As far as I know, a relationship is for two), but he was getting ignored. The line "Meu nome na sua agenda era 'atender depois'" (My name in your phonebook was 'answer later') is such a perfect, modern way to describe feeling unimportant.
So, he ends it. He admits he's sad and that he'll miss her, saying "Eu vou beber lembrando, eu vou" (I'm going to drink remembering, I will). But this isn't just a sad breakup song. He's predicting that she's about to go through a "perrengue"—a Brazilian Portuguese word for a really tough time or a hardship. He's sure that once she realizes what she's lost, she'll feel the same pain he did. The final line is a killer comeback: "Tudo que vai volta, menos eu" (Everything that goes around comes around, except me).