It is rude to strike someone.
Peter is having a drink in a bar with his buds when a drunk man gets in his face.
Peter wants to get away from the man.
Peter turns his back to the drunk man and walks to the other side of the bar.
Peter punches the man in his face causing him to fall backwards on the floor.
Peter has a good night talking and drinking with his pals.
Peter is arrested for assaulting the man.