Labia is a fantastic slang word that means 'smooth talk' or the 'gift of gab.' It refers to someone's ability to speak in a charming, witty, and persuasive way.
In the song, the singer describes a girl who isn't impressed by fancy gifts or champagne. Instead, 'se enamora con la labia', meaning she falls for someone with verbal charisma. It's a great word that captures the essence of winning someone over with words instead of material things.
This song is all about trying to win over a girl who's completely done with love. The lyrics tell us, "Del amor dice que está cansada" (Of love, she says she's tired) because everyone seems to let her down. So what does she do? She puts on her lipstick, grabs her sister's ID because she's "No tiene ni veintiuno" (not even twenty-one), and heads out to heal her heart with a shot and her favorite song.
Then the singer steps in. He sees that even though guys are sending her champagne, she's not impressed by material things like "bolsas LV" (Louis Vuitton bags). He tells her he's different. He's not like the last guy; he wants to take her home, "no para el motel / Como lo hacía él" (not to the motel / like he used to do). He sees a real, "hasta lo espiritual" (even spiritual) connection and wants to make it official, promising his plans with her are "hasta el final" (until the end).