Mark is learning to be a Southerner and is finding himself contemplating the differnt aspects of Southern colloquiallisms. It is common to hear the word "y’all" applied in both the singular and the plural. It is also common to hear the term "all y’all", which can make one believe that "y’all" is a singular term. Let me try to clarify things. "Y’all" is a term used to acknowledge membership to a group. If I say, "Y’all come on", what I’m really saying is, "All of you in the group that are coming, let’s go." When I say, "All y’all come on," what I am saying is, "The entire group need to start moving."