Bancar is a cool slang verb, especially common in Argentina, that means "to put up with" or "to tolerate". It's not something you'll find in a textbook!
In the song, Nicki Nicole sassily sings, "Búscate otra que se banque... todos tus reclamos" (Find another girl who'll put up with all your complaints). She's using this word to draw a line and stand up for herself, making it a powerful and memorable part of the lyrics.
This song is a classic tale of heartbreak, but with a twist. It kicks off with the feeling of a relationship that's over, with the singer spending yet another night crying and thinking about all the things they never said: "Y es otra noche llorándote / Y son las cosas que no dije" (And it's another night crying for you / And it's the things I didn't say). The pain is real and sharp, summed up in the line "Me está matando no poder tenerte y duele" (It's killing me not to be able to have you and it hurts).
But then Nicki Nicole's verse comes in and completely changes the energy. She's not just sad; she's frustrated and ready to fight for what she wants. She believes they're perfect for each other, saying, "somos tal para cual, tú no puedes negarlo" (we are made for each other, you can't deny it). She gets tired of waiting and lays down an ultimatum: "Si no tienes tiempo para mí, yo no tengo tiempo pa' ti" (If you don't have time for me, I don't have time for you). It's a powerful mix of sadness, regret, and a demand for respect, all set to a beat that makes you want to dance.