The phrase "one's exclusive club" refers to a group or organization that is highly selective in choosing its members, and only allows people who meet certain criteria to join. Full definition
Moreover, should a civil suit not go well, you could enter that most exclusive club of someone who has paid a deductible in an E & O claim. (remonline.com)
Here's a rare photo of the world's most exclusive club. (businessinsider.com)
Otherwise you have to find two people who are already in the very exclusive club who will sponsor you. (backstage.com)