Gratuitous Sexual Imagery
To make whatever point Wallace is trying to make in "Big Red Son," he spares the reader nothing in terms of graphic depictions of the pornography he viewed. Gratuitous and explicit language is used by the porn industry-experts as well.
Heartland imagery
In order to make more sense of what kind of an experience the people in more conservative parts of the world have, Wallace calls upon rural and suburban imagery often in his political essays, especially in "View from Mrs. Thompson's."
A reiteration of Kafka-esque imagery
Perhaps in a hope to offer a second chance to readers who don't find Kafka that funny, Wallace retains much of the original grim and gnarly imagery Kafka's stories use. Wallace's recapturing of Kafka's stories are perhaps even more direct and gruesome. (Kafka-esque imagery means imagery with a curiously morbid darkness).
Culinary imagery
This is a funny use of imagery, because Wallace really steps into the shoes of a culinary writer in parts of the title essay, "Consider the Lobster," even though certain interpretations of the essay show that actually, Wallace may not actually care at all about the lobster. In that case, this evocative imagery would be a humorous way to mislead the reader on what exactly the arguments really are.