Descaro translates to "shamelessness" or "impudence". It's a fantastic word to describe a bold, forward action that ignores social norms.
In the song, the singer makes a very direct proposition and then cheekily asks, "¿O es mucho descaro?" (Or is that too shameless?). He's acknowledging his own audacity in a playful way, perfectly capturing the song's flirty and straightforward tone.
This song is one of the most direct invitations you'll ever hear! Grupo Frontera and Tito Double P aren't wasting any time with romance. The song kicks off with the bold line, "Échame la mano, vámonos pa'l baño" (Lend me a hand, let's go to the bathroom). They make it very clear this isn't about feelings, admitting, "Tal vez ni me ames, tal vez ni te amo / Pero no hace daño" (Maybe you don't love me, maybe I don't love you / But it doesn't hurt).
They're asking for a temporary, physical connection, and they're not shy about it. The singer is desperate to "darte besitos en el cuello" (give you little kisses on the neck) and is honest that "esto va a ser pasajero" (this is going to be temporary). He even asks if he's being too forward with, "¿O es mucho descaro?" (Or is that too shameless?). It's a song about pure, unfiltered desire for a moment, with no strings attached.