“Finally, if your partner likes this so far and you feel she’d enjoy some more intense sensations, I have a move I jokingly call “release the Kraken.” To do this successfully, you’ll need a partner who is willing to fully trust and surrender to her own bodily functions, because this technique – and the pleasure and orgasm it produces – causes a lot of involuntary gaping and contractions anally and vaginally. When done correctly, it will cause her pelvic floor to push and pull in ways that are beyond her conscious control. If you’ve been holding a fart in all day, it’s bound to come out. I highly recommend an enema beforehand if you’re not into scat play or super comfortable with your own or your partner’s poop.
To do this, your partner should be in doggy style, and your fin- gers will be inserted as deeply as they can go. You should already be stimulating her, and she should be on the verge of cuming. A vibrator on the clit works well with this trick. When she’s about to cum, straighten your arm and move your hand up and down at a forty-five-degree angle as fast as you can. Speed and pressure are key. Done right, all the involuntary pelvic floor contractions this causes, from gaping to strong squeezes in, feel absolutely amazing, and the pleasure will radiate all the way through her body, via visceral nerve fibers. This also induces a deep feeling of surrender to both her own body and to the person facilitating the experience. For people that like kink play, this provides the same feeling of intense sensation and intense intimacy.” – Excerpt from Beyond Satisfied by Kenneth Play, Chapter 14: Anal, Advanced Anal Fingering Techniques