Slavery: A series of erotic games (book 04)
It emerged soaked and it went back in accompanied by Rhonda's throaty purr.
"On the inside of the vaginal canal, on the top, in approximately this location," she pointed to the outside, "is the g-spot. It has the second largest bundle of nerves of the vagina besides the clit. If you crook your finger just a little," and she crooked the finger of her other hand to demonstrate, "you can feel a slightly rougher spot on the sheath. That's the spot. Now I could make your sister cum by stimulating that alone, but it works much better when I do it in concert to continued oral stimulation to the outside. As she gets closer to orgasm, I might also stick one or two more fingers in her to make her feel