The oddest thing happened at work today. For the past few days these two machines have been in the hallway outside the lab of the visiting scientist on the first floor. They must have motion sensors because when I walked by them this afternoon the protruding tubes began gesticulating wildly, the round thing on top started rotating, and they began shouting in a shrill, mechanical voice that I was not to move. I think the scientist is working on some sort of pest control device because they also started shouting "Exterminate! Exterminate!" I kept walking and nearly collided with the scientist as he wheeled around the corner. He had the nerve to yell at me for disturbing his experiment! Definitely an odd day at work.