Click words on/off to run animations of words and sounds.
What you see/hear are the words of a sentence coming at you from the depths of the screen rather than reading left-right across your screen surface.
The words of each animation, played singly, form a coherent sentence (or at least they're meant to!).
When you run two or more animations at the same time, you create accidental juxtapositions of words and sounds and generate a different set of meanings as ephemera on the screen surface.