Truth be told, there are some who come to church on a regular basis that are not Christians. These people can be considered "fat free" because they lack the "fat" of Christianity. There are two kinds of "fat free" people: those who are seeking a relationship with Christ but haven't found it yet; and those who have grown up religiously but have never made a personal commitment to Christ. Gaining that personal relationship with Christ doesn't require church membership, or doing good deeds, or paying money to the church. He only requires that you have faith and ultimately accept Him as your Savior. Good stuff!