Mujeriego literally translates to "womanizer" or "ladies' man". It's a bold and direct word that immediately grabs attention, especially when paired with "perro" (dog) in the song title.
In the context of the song, Nacho openly admits, "Voy a aceptar que soy un perro mujeriego" (I'm going to accept that I'm a womanizing dog). He uses this word to describe his past reputation and lifestyle, but then contrasts it with his newfound commitment to one person, making it a central theme of change and transformation in the lyrics.
Nacho's "Perro Mujeriego" is a really fun and honest look at a guy who's been a bit of a player, but now he's found someone special and he's ready to change. He starts by saying, "Muchas veces fallando se aprende" [Many times failing, one learns], which sets the tone for his journey. He admits, "Si, voy a aceptar que soy un perro mujeriego" [Yes, I'm going to accept that I'm a womanizing dog], but immediately follows it with, "Que conoció el amor y lo quiere a su lado hasta viejos" [Who met love and wants her by his side until they're old].
It's cool how he acknowledges his past reputation, saying he has "fama de aventurero" [a reputation as an adventurer], but he's got his "mente en la nube y los pies en el suelo" [mind in the clouds and feet on the ground]. He even throws in some English, saying, "Soy mujeriego y te lo digo To the face / Aunque suene outta place / But you came to me by holy grace / Now I feel you're the sun of my days." He's basically saying, 'Yeah, I was a player, but you're different.' He's ready to leave behind "la disco, de la hookah y botelleo y el bling bling" [the club, the hookah, the bottle service and the bling bling] for this new love, even if it means moving to Beijing! It's a sweet and catchy song about finding true love and being willing to change for it.