An unnaturally long tongue is read as gossip, words reaching too far, or appetite that is hard to control. Folk tradition ties it to talk that travels.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.