Using fecal matter to write or draw with on a wall
There was some Graffeces in the Underground Tunnel
The age-old art form of leaving poop stains in the shitter.
My wife often leaves poop-stains in the toilet. One day she called me at work and said that the poop stain bandit had struck again and I asked her if it was an act of graffeces? Needless to say it stuck, LOL.