Miénteme is the command form of the verb mentir (to lie) combined with the pronoun me (to me), creating the dramatic phrase "lie to me". It's a powerful and emotionally charged word that you don't often hear.
In the song, Eladio sings "dale, miénteme, que me creo todo" (go on, lie to me, I'll believe it all). He's expressing a deep vulnerability, suggesting he's so captivated by this person that he'd rather believe beautiful lies than face a reality without them. This single word creates a compelling narrative and makes you want to understand the full story.
Eladio Carrión is usually known for his hard-hitting trap, so hearing him jump on a breezy reggaeton beat to spill his feelings is an absolute treat. The title "TQMQA" is shorthand for the song's catchy hook: "Te quiero más que ayer y mucho menos que mañana" ("I love you more than yesterday and much less than tomorrow"). He does not care about material flexes here. When he says "No me hables de dinero, que eso yo lo puedo hacer" ("Don't talk to me about money, I can make that myself"), he means it; all he really wants is to see her smile and hear her whisper that she loves him too.
He is also hilariously honest about how down bad he is. He calls her a "Bad Gyal, pero no es de España" ("Bad girl, but she's not from Spain"), referencing the famous Spanish dancehall star Bad Gyal to point out that this girl has that exact bold, alluring energy without actually being from Europe. He admits he is lonely and basically begs her to play him if she wants to: "dale, miénteme, que me creo todo" ("go ahead, lie to me, I believe everything"). To seal the deal, he switches to Spanglish, promising that the other girls are getting an instant "unfollow" because he is done messing around: "Yo no juego con mi baby, no play" ("I don't play around with my baby, no games").