Watch Kristen Stewart, Charlize Theron and Chris Hemsworth Read 'Fifty Shades of Grey'

Leave it to MTV's Josh Horowitz to get meta about "Twilight."

You may have heard of Fifty Shades of Grey, the buzzworthy erotica novel that was originally a piece of ongoing "Twilight" fan fiction. It grew in popularity to the point that the author got publishing interest, and therefore changed the names of the characters, birthing a totally legal piece of published "Twilight" erotica.

It's an unlikely story, made even more unlikely when you hear just how terrible the prose actually is. To help illustrate that point, Horowitz had Kristen Stewart and the rest of the "Snow White and the Huntsman" cast read the book out loud, on camera.

The result? Stewart is pretty uncomfortable throughout, and seemingly alarmed at some of the prose. Charlize Theron has a blast reading it, even getting handsy with Horowitz. Sam Claflin gets through it okay, but Chris Hemsworth seems reluctant to even touch the book.

All in all, it's a pretty entertaining watch. Check out the video below: