Cabrón is a versatile Spanish slang word that can have many meanings, from a very offensive insult to a term of endearment, depending on context and tone. In this song, it's used in a defiant and empowering way.
The phrase "ponerme el de cabrón" literally means "to put on the 'cabrón' one," referring to a metaphorical badge or attitude. The singer is declaring that he's done being a "pendejo" (idiot) and is now embracing a tougher, more assertive persona. It implies he's becoming a 'badass' or a 'tough guy' who won't be messed with, making it a very engaging and memorable word in this context.
Eden Muñoz brings us a song about moving on from a bad relationship, but with a twist! Instead of seeking revenge or dwelling on the past, he decides to embrace a new, tougher version of himself. He thought about telling his ex the truth, but decided against it, saying, "Porque eso no es de caballeros / A parte, equis, ya pasó" [Because that's not what gentlemen do / Besides, whatever, it's over]. He even considered getting even, but realized it wasn't worth it: "Para que caer tan bajo / Mejor nomás le dije adiós" [Why stoop so low / Better to just say goodbye].
This song is all about letting go and finding strength in forgetting. He drinks to forget, saying "Pisteo el alcohol con mi conciencia / Y de cruda olvidé quien soy" [I drink alcohol with my conscience / And with a hangover I forgot who I am]. The most memorable line, and the one that gives the song its title, is when he declares he's throwing away his "gafete de pendejo" [idiot badge] to put on his "gafete de cabrón" [badass badge]. It's a fun, defiant anthem about choosing to be strong and moving forward, even if it means a little bit of a party to get there!