Pernoitada literally means an "overnight stay" or an "all-nighter." It's a less common word in everyday conversation, making it interesting and memorable.
In the context of the song, the singer says, "Por você eu 'to largando as pernoitada" (For you, I'm giving up the all-nighters). This implies giving up late nights out, partying, or perhaps even other romantic encounters, to be with the person they love. It highlights a significant sacrifice for love, adding depth to the lyrics.
"Love Absurdo" is a Brazilian funk track by Mari Fernandez with MC Ryan SP and MC Daniel, built around the DJ/producer tags "Tubarão" and "Falcão" that open and thread through the song like a signature.
The story is simple: she keeps calling, and he won't pick up. She's tired of the late nights and the secrecy, and she's ready to walk away, until love pulls her back anyway — "só vou voltar porque teu love é absurdo" ("I'm only coming back because our love is absurd").
The hook flips the mood into something more playful and confident: "Arruma tua cama que hoje nóis vai bagunçar" ("Get your bed ready, tonight we're going to mess it up") is a flirty dare rather than a threat, matching the teasing "Tubarão/Falcão vai te pegar" ("Tubarão/Falcão is gonna get you") tag that runs through the whole song.