Yes, Soutra, I agree that generally speaking domestic violence is not a laughing matter and it can sometimes go in the direction of female to male.
However, I do still smile to myself when I remember DH's surprise when I suddenly punched him in the ear. I could tell from his expression that he was secretly pleased I had done it for the reason I gave above. He could have flattened me if he had wanted to of course.
That's the difference, usually, between male to female and female to male violence. Not always I know.
Incidentally, does anyone remember how in the forties and fifties films often showed women slapping a man around the face or throwing something at them. It was thought of as being tempestuous in those days and was quite acceptable, even sexy. Romance usually followed.