I visited the St. Louis Zoo today with a camera. Upon arrival, I headed to the exhibits of the great apes.   After watching the gorillas for awhile, three of these magnificent animals assumed this configuration:

As you can see, A was checking out B, who was checkout out C, who was checking out A.   It seemed to be the gorilla version of Sartre’s No Exit for about 20 seconds.  And then it was back to romping across the grounds or sitting in a shady spot.