Contrary to rumours, there is no BDSM scene in the book Harry Potter and the Goblet of Fire.
- "Don't put words in my mouth. I would never add a BDSM scene in a children's book. If you want BDSM fiction, you know where to find it." - J. K. Rowling
However, when you come to think of it, a BDSM scene between people with magical powers might be very interesting reading. I can't even begin to imagine the things they would do to achieve pleasure.