video game terminology/etiquette. (Verb) To Ruger, is to remove a friend off of one's friends list to add someone else to the list. It can only be called 'rugering' if one's friends list is full and there is no available space to add a new person. Rugering is business, not personal.
Sony PS3 has a friend list maximum capacity of 100 friends. Once one has filled up their friends list and they want to add another person, they will have to ruger a person to make room for a new person.