What the heck is natural graffiti? It is a term I coined for natural objects used and applied as graffiti. I am working on a series of these right now. These are done in a style known as trompe l'oeil (tromp' low-ee), or "tricking the eye" because they appear to be applied on a given surface. I will eventually spray paint one on a similar brick wall, because I want some natural graffiti around. It would add a nice touch to a patio or garden.