I was so absorbed in Mom and Tammy I had not noticed what Beth was doing until I felt her straddling my hips and positioning herself over my cock. Ta...my had continued to spit on my cock and had it very wet and slick. I knew Beth’s pussy was off limits for fucking so I wonder what the hell she was doing. Just as my cock slid inside Beth I was able to raise my head and I could clearly see two fingers buried to the hilt in her pussy and knew that my cock was ball deep in her tight little ass.I. "Joseph," she muttered again. "Oh God," she added just as sleepily and then, "Fuck me."As commanded, I stroked deeper. I only knew she had awakened when her right leg lifted and bent, opening her pussy more to me and allowing me deeper. Also she began pushing back with each thrust.Soon our moans--and both of us became surprisingly noisy--echoed the moans continuing next door. A most definitely Russian sounding shouted orgasm made us chuckle, but we soon announced our own exhilarating. It might have helped if she had an idea where she started from. The larger bear, the one Beth thought of as 'Mother', was leading them somewhere. Beth and Sis, the smaller bear, were following behind Mother, making sure that she didn't get too far ahead. The three of them had followed the shoreline until they came across a large river. The fresh water flowed from a small hill that could be seen in the distance, mixing with the incoming tide of the bay, forming waves at least a meter high.Beth. Now today we will be learning how to factor polynomials......." that's all I heard before I zoned out. Her tight skirt fit like Saran wrap to her hips and as she moved I could see every detail on her thighs. I noticed there were no underwear lines when she turned around and I smiled. "Something funny, Sophie? How about you answer the question we are working on?" Umm, no thanks Ms. Carrie, I'm not quite clear on the concept yet."She gave me a look and continued on with her lesson. I gulped, but.