Soap suds are light and fleeting, so dream books read them as cleansing in progress or as excitement that soon fades. Overflowing suds stand for a small effort that grew out of hand.
Where in your waking life have you met something like this lately?
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.