Agüita is a colloquial and somewhat playful way to say something "bums me out" or "makes me sad." It comes from the word "agua" (water), and in this context, it implies a feeling of being watered down or deflated.
In the song, the artist sings, "Lo que me agüita es que estás bien mamacita" (What bums me out is that you're really hot). It's an interesting choice of word because it's a more casual and unique expression of sadness or disappointment, especially when paired with a compliment, making it memorable and engaging.
Neton Vega's "/3 Dias +" is a fun, relatable peek into the mind of someone trying to win back their love after a fight. He wakes up feeling blocked and confused, wondering why things went wrong, especially since she left the door open and her phone unlocked – maybe a sign she's not totally done with him? He's worried she'll move on, especially with her friends already spreading rumors that "esta vez no te vuelvo a ver" [this time I won't see you again].
But he's not giving up! He knows neither of them is truly leaving, because "Nos va a ganar la necesidad" [necessity is going to win us over]. He just needs to "aguantar tres días más" [hold out three more days] until she cools down. He's confident that when she least expects it, he'll be kissing her again, even though he admits he's not super handsome, he knows he has what "te excita" [excites you]. He's ready to dance with her and win her over again, proving that sometimes, all it takes is a little patience and a lot of charm to get things back on track.