Pordiosero literally means "beggar" and comes from the plea por Dios (for God's sake), so it carries an old-school, dramatic flavor you won’t hear every day.
Humbe sings "el pordiosero que pide amor," likening himself to someone begging in the street, but for affection instead of coins. The vivid, metaphorical use makes this rare word pop and sparks curiosity to learn more.
This song is such a beautiful and mature take on a breakup, or at least on letting someone go. Humbe starts by admitting he's changed, saying, "Últimamente no he sido yo / El pordiosero que pide amor" (Lately, I haven't been myself / The beggar who asks for love). He recognizes that he's not the right person to make his partner happy right now, because he's been too lost in his own head: "últimamente no he salido de mi mente" (lately I haven't gotten out of my mind).
Instead of being bitter, he gives this incredibly selfless advice. He tells the person to go find happiness, to be open and honest with someone new, and to never hold back their feelings. He wishes them so much joy that "te duela la cara de las carcajadas" (your face hurts from laughter). It's a song about realizing you need to work on yourself, dealing with anxiety and insecurity, and loving someone enough to let them find happiness, even if it's not with you.