Cagadero is a very colloquial and somewhat vulgar term that literally refers to a place where one defecates, but it's commonly used in Mexico and other Latin American countries to mean a big mess, a chaotic situation, or a
Xavi opens "Miami" with a flex: "De SHEIN a LV" ("From SHEIN to LV"), tracking the upgrade from fast fashion to designer bags, then yachts. But by the fourth line he's already circling back to an ex he can't shake: "La neta, yo no te he podido olvidar" ("Honestly, I haven't been able to forget you").
He compares her to a drug for the rest of the song. "Se hicieron un vicio, mi amor" ("They became an addiction, my love"), he says, and later just calls her "Mamita, maldita adicción" ("Baby, damn addiction"). The line "Siento efectos de THC y luego te veo" ("I feel the THC kick in and then I see you") makes the comparison literal: getting high and seeing her ghost are the same relapse. By the second verse he names what actually ended it: "Luego me cayó el veinte que ya no íbamos a ser nada" ("Then it hit me that we weren't going to be anything anymore"). All the money from the first line never touches that.