It must have felt so good for Linda that within a few minutes she started to tense under me and I felt her pussy getting real tight. She was cuming ov...r my cock! She was so turned on that she had trouble laying still under me, she was shaking and rolling.Somehow, my cock slipped out and she turned sideways. I was behind her big ass, one leg was pulled up, and her pussy was exposed. I grabbed my cock and put it back into her. I had my hands free now to touch her body. I felt her leg with one. As Donna passed me by she wispers to me "I go both ways. I like both guys and gals". With that she brushed over my cock through my PJ bottoms. A couple of minutes later my wife went to the bathroom. Donna and I whispered our plan. After we went to bed I got quite horney and worked Gina to the edge of the foot of our bed as I was eating her out. The room was pitch black. About half way through my ministrations Donna quietly came out of our closet and took over eating Gina out. My wife Gina was. I have not got the words to describe the feeling I felt.The guy in her ass came first, his cum pouring from her ass, over his cock, down her crack and onto his balls. He whipped out his cock, his cum just flooded from her ass, her hole open and huge having had such a huge cock in it. He walked over to me, his cock and balls in my face as he stood in front of me. I could not resist the urge to touch but being tied up could not so I opened my mouth and with not a word I took his cock in my mouth.. Gawd, I was beside myself with excitement now. The stairs were old marble and echoed with footsteps floors below. I was now afraid my pounding heart would reverberate loudly and tell on me. But my lust was full and I just helplessly watched. The old guy was two steps lower than Mary and now I could see him a bit more as he seemed to caress her softly. Mary just standing there to allow it. Then he moved closer, knelt on the stair and pulled her skirt higher until he pressed his mouth against her.