Cueros de rana literally translates to "frog skins". It's a colorful and creative slang term used in Mexico and other parts of Latin America to refer to US dollars because of their green color.
In the song, the line "Llueven los cueros de rana" (It's raining frog skins) creates a vivid image of money pouring in. This phrase is used to boast about wealth and is a perfect example of the unique, descriptive slang you can discover through music.
This song drops you right into the middle of a firefight in Culiacán, Mexico. The narrator is completely defiant, saying if he's going down, "Me voy a morir peleando" (I'm going to die fighting), comparing himself to a movie gangster with his rifle ready. The lyrics are a direct and proud declaration of allegiance to the Sinaloa Cartel, specifically the faction associated with El Chapo Guzmán and his sons, Alfredo and Iván. They even shout out their leader's initials, JGL for Joaquín Guzmán Loera.
The song describes a world of high-stakes conflict and immense power. Imagine a Lamborghini Urus speeding by with ten trucks full of armed men following it—that's the kind of scene they set. It's all about defending their territory, or "terre", and their business. They boast that even far away in New York, people know "que el Chapo sigue vigente" (that Chapo is still relevant). It's a blunt look into the life and mindset of someone inside that world, where danger is constant and loyalty is everything.