Legally, there is no organization named “Tucson Petanque Club”.
Since there is no such organization, it is also true that there are no club members, no club officers, and no club dues. Because it doesn’t actually exist as an organization, the TPC does not hold any organizational events and it carries no liability insurance.
What does exist is this WordPress blog named “Tucson Petanque Club”. The web master of this blog occasionally refers to himself as the “president” or “coordinator” of the Tucson Petanque Club, simply to keep a conversation from being bogged down in irrelevant details.
Probably the best way to categorize a meeting of the TPC is as a “flash mob”, which Wikipedia defines as “a group of people who assemble suddenly in a public place, perform an unusual and seemingly pointless act for a brief time, then quickly disperse, often for the purposes of entertainment…”.