shit talker

There’s this guy I work with who is a total shit talker. By that I mean when I'm using the restroom, he chooses to use the stall right next to mine, which is already enough to paralyze my bowels, but then, on top of that, he has the audacity to try to spark up a conversation. What the crap is that? Who talks while taking adjacent shits? I'm worried that the next step is him going number 2 with the stall ajar. People need to learn proper public restroom etiquette; trust me on this, I worked as a janitor at Kroger when I was younger and let me tell you, I've seen some shit...on the walls, I've seen some shit in a urinal, one time I saw some shit just sitting a foot to the side of the toilet that should have been the intended target.