Maquinear is a colloquial verb that means 'to scheme' or 'to plot'. It implies thinking intensely and often strategically about something, sometimes with a slightly mischievous or cunning undertone.
In the song, the line "Tú, me pones mal, a maquinear" suggests that the person's presence makes the singer feel a certain way, leading him to overthink or strategize. It's an interesting word choice that goes beyond simple thinking, hinting at a deeper, more calculated mental process.
"Un Call" is DrefQuila, with Fuka and Red Fingers, keeping things very simple: she calls, he comes. The hook "Baby, tú me pega' un call, yo te paso a buscar" (baby, you give me a call, I'll come pick you up) is the whole plot, and the Spanglish is part of the fun. "Pegar un call" is literally "to stick a call", street Spanish for ringing someone, and the song is full of borrowed English like story, shorty and mood.
Be warned, this one is explicit from the first verse. It is a reggaeton bedroom song, and lines like "Yo solo tengo ganas de perrearte" (I just want to grind on you) lean on "perrear", the dance-floor verb for reggaeton grinding. There are smaller lessons in here too. "Ese totito todos los días es viernes" (with her every day is Friday) plays on Friday as party night, and "me pones mal, a maquinear" (you get me worked up, scheming) uses Chilean "maquinear", to overthink or plot. The softer moment comes late: "Pero no eres tú, como yo quisiera" (but it's not you, the way I'd like), a quick admission that the other girls on a night out are not her.