Tropic of Cancer Steaminess Rating

Exactly how steamy is this story?

X

Yeah, you're gonna want some parental supervision for this one. Actually, maybe you shouldn't read this with your parents at all. Within pages, you'll be accosted with "c***s" and "pricks" and sex with prostitutes. Want an example? They're not tough to find. Here's one of the many passages that justifies an X rating:
What I'm getting at is that moment when, he says, he got down on his knees and with those two skinny fingers of his spread her c*** open. […] He gets down on his knees—get this!—and with his two fingers…just the tips of them, mind you…he opens the petals…squish-squish…just like that. A sticky little sound […] almost inaudible. Squish-squish! Jesus, I've been hearing it all night long! (8.78)

Enough said.