Migajas literally translates to "crumbs." It's an interesting word choice because it's not commonly used in romantic contexts, making it stand out.
In this song, Denise Rosenthal uses "migajas" metaphorically to describe receiving very little effort, attention, or love from someone. She sings, "Te di mi todo y tú me da' migaja'" (I gave you my all and you give me crumbs), highlighting the imbalance in the relationship and her realization that she deserves more than just the bare minimum.
Denise Rosenthal set this at the exact hour a person keeps coming back: "Son las tres'e la mañana / Y tú me vuelve' a escribir" (It's three in the morning / and you're writing to me again). She already knows what the message will say — "Ya me sé tu jugada" (I already know your move) — and answers it anyway. The title is the accusation she finally makes out loud: "Te di mi todo y tú me da' migaja'" (I gave you my everything and you give me crumbs).
The chorus is where she stops, and she puts it in the past tense: "Anoche, baby, fue la última ve'" (Last night, baby, was the last time). The reason comes straight after — "Conozco mi' valore' y ya no voy a volver contigo" (I know my worth and I'm not going back to you). The bridge names what the returning had cost her, "Perdí toda libertad" (I lost all freedom), before "Volví a ver el cielo azul" (I saw the blue sky again). It ends on the flattest refusal she can make: "No más migajas, babe" (No more crumbs, babe).