Understanding Auto-Fellatio, etc.

[Tim Strzechowski]

[ ...] > But he also lauded turning from "Latin to Greek" readings,
> which word, Greek, of course is suggestive of anal-lingus.
>
> Like the long-nosed preacher earlier in this same section,
> this nose of Sybil seems to me to really be a penis, and
> this whole line describes AF, blow being a slang fellate.
>
> There's many poets naming females that seem to be refering
> in fact to their own phallus. Choice among them is Dante's
> phallus IS Beatrice as described in Vita Nuova, section 5:
>
[ ...]

I've read many of Glenn's auto-fellatio, et al related posts for some time,
and I kindly ask if someone could explain to what end this "reading" of text
takes us.  I am no doubt missing something, but I see a lot of parallels
being drawn between textual images and body parts, as well as images and
sexual acts, and I'm a bit uncertain where this reading leads us.  I've
visited Glenn's website, but I'm afraid I still don't understand matters in
this regard.

Does text inherently contain sexuality that Glenn is exploring?  Are there
certain images that act as representations of sexual acts?  I really don't
mean to seem rude or profoundly obtuse, but I just don't get it.