Here's a clip of Professor Willard Spiegelman of Southern Methodist University, talking on Henry Reed's "Naming of Parts" part of The Great Courses lectures, How to Read and Understand Poetry (1999):
Spiegelman uses "Naming of Parts" as an example of "irony as dialectic", and brilliantly even spends a minute to explain Reed's switch of "duellis" (battles) for "puellis" (girls) in the poem's epigraph from Horace.