Like one who binds the stone in a sling is the one who gives honor to a fool. (ESV)
To give honor to someone is to empower them in the eyes of others. Bestowing honor to those who don’t deserve it confers to them credibility with which they can hurt, damage or destroy others by their foolish conduct and decision making. It also makes us look like fools for honoring them and may result in bringing much blame and negative consequence into our lives from those who have been hurt by their foolish conduct.