She had pushed it to the limit a number of times, and we were lucky nothing more happened than a touch on her ass, or a gentle kiss on the cheek. She ...now had plenty of sex appeal and she no longer had any reason to lead men on anymore. It gave Ann that confidence she dearly needed, and things between us were better than any other time we had been together. It was then about six months ago when everything began to change. Ann had just turned fifty one and she no longer was that vibrant woman. She smiled at him dreamily as his frame again covered her body. As Terry expertly, sensuously lubed his baby sister's anal cavity, she became more relaxed, and allowed herself to become so comfortable she nearly came again with just his fingers in her ass. She was still not prepared for the experience that was now presenting itself. The huge tip of Terry's hard cock pressed against her asshole. Terry tried to be gentle, but he knew he was going to have to force it in. Cock in hand, pressed. I adjust my position so that am on my side and lean forward and I lightly begin to lick your nipples until both are fully coated with my saliva, then I tenderly bite them and cause you to squeak out in surprise, then your grasp on my cock becomes more rapid and then you release me so that your fingers can undo my zipper and pull out my cock. As my cock springs forward, you begin to stroke it up and down, I then reach down and undo your pants and begin to slither my. My nipples are rock hard as you tease them with your teeth. Nipping and biting ever so gently. You raise your head up a little to take even more of my breast into your mouth. You suck hard and a shiver goes down my spine right into my clit. I raise onto my knees and pull you up with me. Kneeling with only inches between us we look into each other's eyes panting with desire. You reach for my slit and mimic the same motions I’m practicing on you. We are both panting and jiggling as we palm each.