Splashing in water is traditionally read as playfulness and a release of feeling. Being splashed by someone else stands for emotions that reach you whether you want them or not.
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.