Conditioned response was what he called it. An automatic physical response to outside stimuli enforced through intense emotion. And the emotion select...d was pleasure, specifically sexual pleasure.We had talked a few times about orgasm on demand and I decided that it would ruin the experience, so I knew that was not his idea. When he told me what he planned and his expectations I was appalled, at first. That gave way to curiosity and finally a deep need to find out if it was possible, so I. “But by now the position’s as filled as your rear passage.” Alicia’s rage was as fierce as it was powerless. She struggled against Gavin’s grip, but his strong hands and steel torso had complete control of her. His voice was steely as well. “You know I thought you’d be a bit less naïve than her, Alicia. This was never about any job. This is about my cock …” His grip tightened. “... And your ass.”With one bulldozing thrust he rammed himself inside her to the balls.The sheer force of his groin. ‘Lift your arse up,’ I told her, my voice strong with a hint of menace. She complied raising her arse as high as she could while still tied to the bed. I positioned the pillow under her, keeping her arse high in the air, open for me to explore. ‘Daddy, are you intending on, umm, on using all my holes?’ she whispered, her voice quivering. She smiled weakly, her eyes telling me how she wanted all of her to belong to me. Her sparkling eyes showing her fear and excitement at allowing me to own her. This was starting to get intense. I kept stroking my cock, then I started feeling my orgasm building. Oh this was it! I looked at Jeff, "That's it. Oh fuck me! You're making me cum!" I screamed. Jeff swiped my hand away from my cock and he grabbed it and started jerking me off. With my free hands all I could do was grab the sheets beneath me and hold on. This orgasm was getting more and more intense. I wanted to buck my hips or move in some way but Jeff was holding me down as he kept pounding.