Bad poems tend to have an opaque narrative anyway. This one is built to have an opaque narrative lead into bad content. Whether or not you think this is obvious is what decides how you evaluate this poem.

The only reason you can say this is a good poem is because it's submitted where bad poetry is obvious. Evaluated anywhere poetry is held to high literary standards and it would be the gaggingly terrible poem it is because of the degree of literacy involved in describing the process of insertion and extraction of a bottle of Selsen Blue from some guy's ass. Paired with the obvious and then compared against the obvious later; the meaning of these high-sounding words within the poem and even their definition outside of the poem become altogether awful by design. The hard object you feel the opaque narrative wraps itself around is the poor use of the English language made uberpoor by its correct usage.

Or in metaphor, the English language is this guy's asshole wrapped around a bottle of Selsen Blue.

Really, the only reason you think it's a good poem is because despite all that; it's still a bad poem.