She dispensed with the niceties and invited me over to her apartment. I eagerly went.She was softer than an average size woman, but beautiful and oozi...g sexual hunger. Her hair was chin length and fashionably spiky. Her breasts were about my size, 38DD. I looked forward to suckling them. A woman can get pretty turned on from heavy nipple play--the kind just on this side of the wall between pleasure and pain. Turns out she already knew this.Once inside, young Nikki kissed me passionately and. He was so gentle and slowly pushed in till he felt my cervix. That made me jump and a wave of excitement ran through my pussy. He lowered himself on me, then stopped ,just to feel and savor his body on mine. I held him and squeezed his dick with my pussy. He jumped slightly, and took a deep breath. I rubbed his back all over and let my hands go down to feel his firm butt cheeks.Oh my...they felt so warm and it gave me a hot feeling. I remembered feeling him when he was little, and getting hot. So he saw the whole performance and by being behind the girl, standing near the door, she couldn’t see that he was there in the room. She only knew of his presence when he gave her a hefty smack on the backside. I heard the slap and her cry of alarm and felt her suddenly rise up, my erection falling out to a wet sucking sound as her vagina had squeezed itself tight around my cock at the sudden shock of the slap. My cock smacked onto my stomach as she fell off the bed to another cry from her. Looking below."Holy fucking shit ... would you look at that," I said. But Stacy was as yet too far gone to even entertain any thoughts of doing that, barely clinging to me as I stood there holding my almost unconscious sister.I'd have made bets that half the island was now sitting below us likewise engaged in what could only be described as an orgy of unprecedented decadence. It was the most amazing sight I had ever seen. And one I certainly hadn't expected to see as I stood there looking.