PPG just crawled on his stomach in the direction of my table.
As soon as he came around the corner I could see him, because he is a three-dimensional being on a flat surface in clear view of where I'm sitting.
Rather than say anything, I sat way up in my chair and Spock-eyed him.
PPG: "Ya caught me. I could have gone lower if I'd wanted to."
Me: "No. I don't think you could."