Doodle Logging
Whenever you have to take a nice solid shit but instead of letting it drop you clench it with your anus. You then waddle over to the bare walls, turn around and bend over to expose the tip of shit and use the walls as your canvas.
Nick forgot to lock the bathroom door again. When I walked in he was doodle logging my walls. I really think he's the next Picasso. I just wish he practiced his craft at his own place.