It's mean to swear at people in public.
John is walking down the street when a man bumps into him.
John wants to let the man know he doesn't like being bumped by them.
John firmly but politely tells the man that it's not okay to bump into people in the street.
John uses strong language against the man calling him bad words for bumping into him.
The man apologizes for bumping into john and learns to be more careful.
The man who bumped into John is angered and doesn't feel sorry for bumping into John.