Well, it is supposed to be poetic and evocative... at least when it is done well. The idea is to stimulate the imagination by only suggesting and giving images.

As I said, when done well, it can be powerful and extremely erotic. However...

[He very much doubts those are the works of great poets. He caught a glimpse of the cover of the book while she was flipping through it.]

Those are probably not the best example of it to be honest, but that is not their purpose. They are mean to be titillating.