"Old Money" is Código FN and Jasiel Núñez bragging, start to finish, and they are having a great time doing it. It opens on a pretty girl who "se vino a topar" (ran into) the wrong guy: "le gusta lo malo, y ni modo, yo soy Satanás" (she likes bad boys, and oh well, I'm Satan). From there it's the truck, the crew, and the party: "Pongan corridos, que suene Chalino y vamos a pistear" (put on corridos, play Chalino and let's drink). Chalino is Chalino Sánchez, the corrido singer every Mexican regional act still name-checks, and "pistear" is Mexican slang for drinking.
The chorus is the flex. "Mi vestimenta es el money" (my outfit is money) mixes in English the way a lot of corridos tumbados do, and "las antiparras pa'l sol son puro Cartiercito" (the sunglasses are all Cartier) shrinks the brand to a cute diminutive, which is funnier than it sounds. Watch the slang: "feria" is cash, "chambear" is to work, "la neta" means honestly, and "a la verga" is a very rude "to hell with it". Under all the swagger there is a rule: "Nunca se brinquen la línea" (never cross the line), because he is a gentleman until you treat him badly.