I can't see exactly what Ari's facial expression is, and his body language seems neutral. Tory's seems to be more bemused somewhat. Baskin's reaction is pretty much the same as mine. Doug seems to be enjoying a relaxing enema.
More serious mode, I caught the last half of this debate online. I thought Chow was doing ok until she did this, not spectacular but ok. She has a creative arts background, she knows the difficulties of being in an often unappreciated, little understood or cared by most people, understands the arts is actually a very competitive field, and she's got arts cred in an obvious art friendly venue. She also knows, or I hoped she knows that artists can often be unfairly I think, stereotyped for being too "artsy fartsy out there" and can't be taken seriously. (Think of a bad stereotype of a post modern artist whose work consists of a single spoon on top of a cardboard box, with the title "And Thus Spake Schroedinger photonic movement #9")
So why she did this "art piece" in the debate, I'm kinda gobsmacked. Chow seems to be fighting on multiple fronts in this campaign, including herself. That is not beneficial for her IMO.