His head was spinning and his balls squirming inside their sacks. His penis pulsed and he fought the urge to cum. Allison's hips began to move in lit...tle twitches. When Chris felt it, he slowly pulled out until only the head inside. Then he pushed back down hard. "Ahhhhhhh," they both gasped. "Oh God Mom, I'm fucking you... I'm fucking you," Chris said as he began to move up and down. "Mom... oh God Mom... I love you. I never want to fuck anyone else." "I love you too Chris... fuck me... fuck. . I almost come there and then, into my own hand, which is grasping my cock, my cock which is dripping with pre-cum, hard and wet itself, as I'm trying to aim it into you, but I relax, let the feeling subside and press forward, the tip of my prick nudges your arse and you brace yourself, "Slowly" you murmur, but I'm aware of the limitations, so I dont rush, I want this to last and I dont want you to regret your decision, so slowly I ease forward, but apprehension and tension is inevitable,. We smiled in unison as he spoke of struggling to do what I was so easily able to do to her. It brought a chuckle out of me that I’d done dirty things to her that he hadn’t even gotten to do. I’d tasted her sweet hole and her sour hole. I made her beg for relief, and today I was going to finally give it to her, on my terms… “But sometimes we’re just both too shy to do it like that… she’d never go for that… That ass though... I’m not really like that.” Over and over again I would hear excuse. I look over my shoulder at you."No worries baby girl, lay your head down on your arms." You said.I felt vulnerable and nervous but complied. My arse sticking up, my head down, I felt the first spank. I did not move, or utter a sound. A second and a third spank and my confusion started. I wanted you to stop, but I didn't want you to stop. I could feel my pussy getting wetter with each spank.I felt your hand rub my bottom softly and your command, "Open your legs baby girl."I hesitated just long.