The hamburger is read as quick, filling comfort — needs met fast rather than well. Sharing one points to easy company; eating alone in a hurry, to a life with little time to sit down.
Has this come up in your dreams before? What was going on in your life then?
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.