Define cruel and mean. I am often very and highly blunt, causing people to doubt themselves and their very existance. It is very interesting, their responses, however, I am more interested in why I am telling them the harsh words. When I say something blunt it is my view, what I see when looking at them. If they don't like it, they can change it, realize that I am worthless to them, or focus on what I'm saying and go nuts over the message.
Being cruel or mean with physical abuse is normally not my intent. When I do harm others physically, it is by accident. My nails are too long and sharp and draw blood. Or I accidentally kick their leg when aiming for a soccer ball. At that time I do apologize. Though if they remain silent and take the hit with a closed mouth and nice appearance, I respect them more because of being a good sport at my unintentioned attack.