I suppose it is what is called "humor"...

I have never seen anyone kid about their mission statement so seriously

The Processing application is littered with examples of the designers' sense of humor.  Here's one of my favorite comments from the source code:

And a message that can appear in the PDE:

      if (!sketchbookFolder.exists()) {
        Base.showWarning("Sketchbook folder disappeared",
                         "The sketchbook folder no longer exists.\n" +
                         "Processing will switch to the default sketchbook\n" +
                         "location, and create a new sketchbook folder if\n" +
                         "necessary. Processing will then stop talking\n" +
                         "about himself in the third person.", null);