Cegada means "blinded" or "dazzled." It's a strong past participle that evokes a sense of being unable to see clearly, either literally or metaphorically.
In this song, Nanpa Básico uses cegada to describe someone living in a lie, unable or unwilling to see the truth: "Vives en tu mentira cegada" (You live in your lie, blinded). This word powerfully conveys the emotional state of being deceived or self-deceived, making it a compelling choice for the lyrics.
"Qué Hago Con Esto" is Nanpa Básico's account of a breakup he never agreed to. He opens with the betrayal itself — "Me soltaste cuando te pedí que no me soltaras" ["You let me go when I asked you not to let me go"] — then lists what he gave up for nothing: photos kept so he wouldn't forget her, more effort than he thought he had in him, none of it enough to stop her from leaving "pa' otra parte" ["to another place"].
The hook turns the heartbreak into a return policy: "Y ahora ¿Qué hago con esto? Dime dónde lo devuelvo, Pon mi corazón en su puesto, Que el resto yo lo resuelvo" ["And now what do I do with this? Tell me where I return it, put my heart back where it belongs, I'll handle the rest myself"]. By the second half he's stopped asking her for anything — "Tu silueta se esfumó, se esfumó, se esfumó, se esfumó" ["Your silhouette vanished, vanished, vanished, vanished"] — and saying it four times in a row does the work of showing just how fast she was gone.