An online argument is read as conflict without faces, where words grow sharper because no one sees the other. Dream books link it to frustration that has nowhere else to go.
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.