Paredão literally means “big wall,” but in Brazilian party culture it refers to a powerful sound system made up of huge speakers, often used at outdoor parties. In the song, the singer says she cannot resist the deep bass of a paredão, making this a memorable glimpse into Brazilian music and nightlife vocabulary.
This one is a party song with one instruction, repeated until you can't forget it: "Beba mais, beba devagar" (Drink more, drink slowly). It sounds like a contradiction, but that's the joke. She can have another round, just don't rush it. "Menina, beba" (Girl, drink) is the hook, and by the end Naiara is just chanting "beba, beba, beba" (drink, drink, drink).
The verses describe the girl in question. "Ela só quer farrear", roughly she just wants to party (farrear comes from farra, a night out). "Ela é independente, curte a vida livremente" (She's independent, enjoys life freely). Then the Brazilian detail a translation hides: "Ela não resiste ao som grave de um paredão" (She can't resist the bass of a paredão). A paredão is literally a big wall, but here it's the huge wall of speakers people build into a car trunk for street parties. Add "desce até o chão" (she goes down to the floor, dancing) and "perde o juízo, mas o copo tá na mão" (she loses her head, but the glass stays in her hand), and you have the whole night in four lines.