Cabrón is a versatile and strong Spanish slang term. While it can literally mean 'goat', in common usage, it often translates to 'badass', 'tough guy', or even 'jerk', depending on the context and tone.
In this song, the artist uses it to describe himself, singing "Seguiré siendo un cabrón de por vida" (I'll continue being a badass for life). It conveys a sense of being resilient, strong-willed, and perhaps a bit rebellious, making it an interesting and memorable word to learn.
PERRA MADRE is Armenta and Gabito Ballesteros trading verses about the same breakup from two different angles. Armenta opens by claiming he's fine now: "Gracias a Dios ya no pega malilla" ("Thank God the comedown doesn't hit anymore"), using the word for drug withdrawal to describe missing her. Two lines later he's still awake all night, "Amanecidote, tomando tequila" ("I've been up all night, drinking tequila"), so the recovery he just announced doesn't hold for long. That's the trick of his verse: he says he's over her, then the very next line proves he isn't.
Gabito's half turns the same hurt into a flex, cocaine, Cartier, a rotating cast of other girls, because sitting still with the feeling is worse than performing that he's fine. Even so, he keeps circling back to one honest question, asking the moon "Luna, cuéntame si está cabrón" ("Luna, tell me if it's tough") whether she's struggling too or if he's the only one still checking. It's a corrido that dresses heartbreak up as a party and lets the cracks show anyway.