Manía literally means "mania" or "obsession," but it can also refer to a peculiar habit or quirk. It's a word that carries a lot of weight and intensity.
In this song, Rauw Alejandro uses it in a very clever and flirtatious way. When he sings, "A que te pego mi manía" (I bet I'll pass my obsession on to you), he's confidently suggesting that his unique way of being is so captivating it's contagious. It’s a playful invitation to get caught up in his world.
Rauw Alejandro is having a tough time in "Mil Mujeres," but it's a problem of his own making! He kicks off the song by saying, "Lo bueno de estar solo / Es que puedes hacer de todo" (The good thing about being single / Is you can do anything), celebrating the freedom of not being tied down. But he immediately admits the downside: "Los problemas a mí me llueven / Por envolver a mil mujeres" (Problems rain down on me / For getting involved with a thousand women). He's a classic player who loves the attention but finds it hard to choose just one person.
He's also brutally honest about his intentions, which is part of the song's charm. He makes no promises for the future, telling a girl directly, "Aprovéchame hoy, no te prometo nada luego" (Take advantage of me today, I'm not promising anything later). He even gives a very blunt warning: "No te enamores, te las voy a pegar" (Don't fall in love, I'm going to cheat on you). He's not trying to be a romantic hero; he's looking for a good time with someone who understands the rules of the game.