A Supermarket in California

With Walt Whitman's take on Realism and Gracia Lorca's avant-garde approach, Ginsberg takes an imaginary tour to a supermarket with Walt Whitman.
Along with the setting of crowded supermarket in unusal timing, the description of husbands filling aisles, wives in avocados, and babies in tomatoes provokes chimerical image of such a mundane place and triggers us to look at trivial event from different angle.
Moreover with the parenthesis and the last stanza, about Charon and the boat going down the Lethe, Ginsberg implicitly point people to turn around and be aware of novel view that can be taken.