Teresa Nielsen Hayden over at Making Light quotes a proponent of Mormon romance novels (yes, really) who finds sex scenes insulting:

“I have always felt the long, detailed sex scenes are an insult to our intelligence because we all know how it works,” [author Anita] Stansfield said.

Sez Teresa the Editor: “I am resolutely not imagining sex scenes written for the benefit of readers who don’t know how it works.”

What a horrifying thought.