What does Block tell K. about his impressions on the defendants in the Court Offices in “Block, the Corn Merchant – The Dismissal of the Lawyer”?

Block tells K there are many reasons why people there are confused, but one “was the sight of your lips. Afterwards, he told us he saw on your lips the sign telling him he himself was going to be condemned.” K. responds, “I can’t see anything special about my lips.”