You probably know how Iceberg Charts work. Ten tiers will be used in mine, each representing a different layer of knowledge of the site, with the entries becoming more and more obscure as you go down, as you probably already know. You can suggest any post, event, or phenomenon related to the site to go into the iceberg in the replies, and you can throw in some that you made up at the very bottom.
Near the tip of the iceberg: The podcast took its name from the subreddit, the official podcast of the site is Citations Needed, Virgil is secretly an active user here