I was asked this by someone the other day, and did not understand it. So, off to google I go and I found this. Seems interesting.
Masonic Turtle PinMany members of America's great fraternal organizations, such as the Shriners, Masons, Elks, and American Legionnaires, are familiar with that age-old query, "Are you a Turtle?" Sometimes, one sees a green-shelled turtle lapel pin or tie tac, or even an auto decal with a grinning turtle asking the same question. But what or who are the Turtles, you ask?
Quite simply, the Turtles are a drinking fraternity that exists in the United States of America as a fun-and-honor group usually within the local lodge or post, sort of a side degree. It traces its honorable origins back to the Second World War, on January 12, 1943 in an English pub, when a group of fighter pilots formed a semisecret drinking fraternity among its squadron's members, and put prospective candidates for membership through a mock initiation.
Having no dues nor initiation fee, the Turtles simply ask new members to go out and recruit new members.