Favorite Non-Fiction Sex Books?

evanescentowl evanescentowl
I'm not talking about "based on a true story" erotica here, more like textbook type material. Instructional material, position books, that sort of thing is what I had in mind.

Do you guys have any recommends? Any favorite authors? Have you come across any written by complete quacks?
06/08/2013
  • Spring Buzz Vibes BOGO: Buy 1 Vibrator Get 1 FREE
  • Save $15 on Smartballs Uno+Duo kit
  • Save 25% when buying 2 products from Toynary!
  • Get A Free Towel With Luxury Line of Vibrators from Leaf!
  • Get A Free Bag Holder with Fun Factory toys!
  • 1
  • 2
  • 3
  • 4
  • 5
All promotions
Total posts: 1
Unique posters: 1