Mujeriego translates to "womanizer" or "ladies' man." It's a direct and somewhat provocative word that immediately tells you a lot about the song's theme and the character of the singer.
In the context of "La Moral," the singer uses this word to describe himself, admitting, "Pero tú sabes que soy un mujeriego" (But you know that I'm a womanizer). This self-awareness and blunt honesty about his nature are central to the song's narrative about a complicated relationship, making it a very enticing and memorable word.
Sabino's "La Moral" is a super direct and almost cheeky song about a relationship where one person (the singer) is a self-proclaimed womanizer, and the other person is upset about it. But here's the twist: he keeps repeating, "Tú ya sabías" [You already knew]. He's basically saying, "Hey, I told you who I was from the start!"
He even questions society's rules, asking, "¿Quién define lo que está bien? ¿Quién define lo que está mal?" [Who defines what is right? Who defines what is wrong?]. It's like he's pushing back against the idea that his actions are inherently 'bad' if his partner knew what she was getting into. He's not trying to sound like a jerk ("No quiero sonar patán" [I don't want to sound like a jerk]), but he's firm in saying, "No puedo dejar de ser quien soy" [I can't stop being who I am]. It's a 'take it or leave it' kind of vibe, and honestly, it's pretty bold!