Question: what is the mouth of truth in rome
Answer: The Mouth of Truth ( Italian : Bocca della Verità ( ˈbokka della veriˈta ) ) is a marble mask in Rome , Italy , which stands against the left wall of the portico of the Santa Maria in Cosmedin church , at the Piazza della Bocca della Verità , the site of the ancient Forum Boarium ( the ancient cattle market ) .