On Lynne’s next go she had a chance to double up to £20 but she was reluctant to gamble, but I took over, pressed the gamble button and lost. “We...l, thanks for that,” she said, “You get a forfeit.” And with that she pulled the jar of spunk out of her handbag, unscrewed the lid and dipped two fingers in. They came out covered in my cum and she moved them up to my mouth. “Eat,” she said; and I licked her fingers clean. The jar returned to her handbag. We played a bit more and again on Lynne’s. I threw on a robe and went over to open it. Darcy stood there all made up and ready for school. I couldn’t help but notice the way Darcy’s eyes explored the folds of my robe.“Take it off, “ was all my sister said, and I did as I was told. I stood there naked in front of my beautiful identical dominant twin sister.“So. How did you sleep last night?” Darcy asked with a smile.For some reason, I felt slightly embarrassed. It had been funny last night when my sister had called me her bitch. And I. There was no need for Natalie to make up a list for the next roll, we had already agreed upon the variety of movies to roll for. Once again I put my fate into a roll of the dice. I prayed for middle numbers, with all the other items I was going to be purchasing I wanted something easy to buy. What I got was a pair of sixes. Doubles and high numbers, the worst possible combination. From what we had originally come up with high numbers meant the movie had to be in the cum guzzling gang bang. I’m going to cummmmm.” My Girl wailed, and she started to convulse and shake with a powerful orgasm, the huge dog still driving his dick into her with quick, powerful thrusts. Her body shook like a child’s doll as the mammoth dog pounded her.My young slave’s orgasm continued, the big dog looming over her, his massive hard-on sliding in and out of her like a piston. Suddenly he became still and stood panting, his cock buried in her pussy.“Mistress...He’s cumming…” the Girl moaned out. I.