Enmaquinado is a fantastic example of Colombian slang you'll hear in music. While it comes from the word máquina (machine), its slang meaning is 'to be geared up' or 'ready for anything', often implying being armed.
In the song, Feid says he arrived at his girl's house enmaquinado, por si las moscas (geared up, just in case). It's a powerful word that paints a vivid picture of his street-smart lifestyle and adds a layer of toughness to his romantic pursuit.
In "RU MOR", Colombian reggaeton star Feid leans hard into Medellín street slang to tell a classic tale: dating someone whose parents cannot stand you. The mother disapproves of him because of his chains, tattoos, and rough crowd: "Tu mai no quiere que yo esté contigo / Por las cadenas y por mis tatuajes / Porque ando siempre rodeado de bandidos" ("Your mom doesn't want me with you / Because of the chains and my tattoos / Because I'm always surrounded by bandits"). Instead of taking offense, Feid flexes his newfound wealth. He boasts about his green fleet of cars and bikes as if he won the Colombian lottery ("me saqué el Baloto"), promises he will upgrade the mother-in-law out of the hood into the upscale neighborhood of El Poblado ("Dile a la suegra que la buena, que algún día la saco del barrio / Y me la llevo pa'l Pobla"), and tells his girl to sneak out the back terrace in a miniskirt for a night of partying.
What makes the track stick is how blunt and full of local flavor the storytelling gets. Feid pulls up in a "mionca" (street slang for a big truck or SUV) and stays on guard ("enmaquinado, por si las moscas"—armed and prepared, just in case). He switches between sweet promises of driving her home at sunrise and direct warnings that her dad ("tu cucho") is going to cause trouble if he catches them sneaking around. It is a late-night, rebellious ride that turns neighborhood gossip into pure party energy.