This phrase is used to indicate that one should ignore or not pay attention to absurd, senseless, or foolish comments. It's similar to the English saying 'To foolish words, deaf ears'.
Examples
- Spanish: No hagas caso a los insultos de ese chico, siempre recuerda: 'A palabras necias, oídos sordos'.
- English: Don't pay attention to that boy's insults, always remember: 'To foolish words, deaf ears'.