It was a peaceful Sunday morning

A husband is walking with his wife on the sidewalk when he sees a dude whom he had a lifelong grudge with. The dude immediately goes hostile upon seeing the husband and is clearly looking for a fight. The wife gently tells her husband to attack him mentally, ending the fight before it even begins The husband listens and nods in agreement. When the hostile person gets close, the husband immediately punches him in the chin, knocking him out immediately. The wife looks at him quizzically. The husband responds "attacked him mentally"