1. The idea of having a social life does not exist in the person's mind. Where the idea of having friends, the concern of not having friends and dating is inconceivable and is of not existence. The reason being is that person has never been predisposed to it in the first place, so the idea of not having friends does not bother him or her. In other words, take for example the Sims computer game. It's like having a sim that has no social bar on the needs indicator. By having an undefined social life, the person does not have to worry about maintaining friendships, giving gifts, working out relationships,losing, nor betraying friends. Because the person who has and undefined social life has nothing to lose. It's like dividing a number by zero when it comes to determining the number of friends an undefined social life person has.
John has never had friends; he does everything by himself. He must have an undefined social life because he is always happy doing things by himself. Whenever someone asks John if he has ever had a girlfriend, he just looks at them weird at complete and utter confusion.