Autoflajelarme is a fascinating and somewhat dramatic word that literally means "to self-flagellate myself." It's a reflexive verb that implies a harsh self-criticism or punishment.
In the context of the song, the singer uses it to describe his tendency to criticize himself with negative adjectives. He sings, "Después de autoflajelarme en adjetivos" (After self-flagellating myself with adjectives), highlighting his self-deprecating nature before asking for a chance at love. This word is memorable because it's not commonly found in everyday conversation or typical song lyrics, making it stand out.
"Lo Mejor De Lo Peor" ("The Best of the Worst") is Ricardo Arjona's tongue-in-cheek pitch for imperfect love. He opens by admitting he is the opposite of what she deserves — "Soy exactamente lo que no mereces" [I am exactly what you don't deserve] — and does not dress up his track record, owning the same mistake five hundred times over: "He cometido el mismo error 500 veces" [I've made the same mistake 500 times]. Rather than promise to change, he argues his case on honesty alone, daring her to choose him anyway: "Piénsalo, puede que sea yo lo mejor de lo peor que haz conocido" [Think about it — maybe I'm the best of the worst you've known].