Like the legs of a lame person that are withered up,
so is a proverb in the mouth of fools. Bible see other translations

The legs of a lame person dangle uselessly, they carry no “weight” (authority), and are unable to carry him where he wants to go. Similarly, if a fool does speak a proverb, trying to act wise, it “dangles” uselessly from his lips. It has no authority, because the speaker has no authority. Furthermore, it was likely spoken inappropriately. In any case, like the lame leg, a proverb spoken by a fool will not get him where he intended to go; it will not have the meaning or impact that he wanted it to have.

Commentary for: Proverbs 26:7