Aguantao' is a colloquial, shortened form of "aguantado," which comes from the verb "aguantar." It means "held back" or "restrained."
In the song, Bad Gyal uses this word to express a strong desire that she has been suppressing. She sings, "Me he aguantao' las ganas pero ya quiero darte" (I've held back the urge, but now I want to give it to you), conveying a sense of pent-up longing and anticipation. This informal usage makes the lyric feel raw and immediate.
Bad Gyal sings about finally giving in to a desire she has held back for a long time. She notices someone across a smoky room and decides tonight is the night she stops waiting and goes after what she wants.
The verses repeat themselves almost word for word, like the same thought looping in her head before she acts on it. It plays more like a short, sultry moment from a night out than a full story, which fits the song's title as a skit rather than a complete track.