The Critic
Simple, abstract, geometric shapes move and morph on the screen to harpsichord music, from a French Suite (BWV 816) by J. S. Bach. The voice of an audience member, who claims to be 71, complains throughout the film despite being told repeatedly by other audience members to keep quiet.
The onscreen images feature geometric patterns. The "cranky and clueless" old man is trying to make sense of them, and describes what he sees at various points, including a squiggle, a fence, a cockroach. The old man finds that certain images remind him of the biology classes of his Russian boyhood. When two abstract shapes approach each other and unite, the old man sees it as a mating sequence. "...They like each other. Sure. Lookit da sparks. Two things in love!... Could dis be the sex life of two things?" 
When the scene shifts from the "mating" to other abstract images, the old man gets bored. He proclaims the images must be symbolism, then adds that they are symbolism of junk.
He eventually concludes that some of the images, depicting lips, are "dirty", obscene. He admits at some point that he was looking for "a hot French picture", which he hoped would involve nudity. The implication is that the old man is in the wrong movie theater, probably one screening art films.
He also wonders why the creator of the film wasted his time with this. He points that this creator could instead do something meaningful, like driving a truck, or do something constructive, like working in shoemaking.
absurd, satire