He shoots it out when he cums. But I don't want to cum yet. So I'll leave you girls here and go look for some friends of mine." I didn't know it then,...but I learned later that he wanted to stay in the "Zone" so his cums would be better. And I learned that the friends he was looking for were all women, and he was going to fuck them if they wanted him to, and that Mom wouldn't mind, because she was going to be fucking other guys besides him. That's what they do here.After he left, Mom told me. Motioning me to the chair across the small room, she pushed her hair away from her face. As I sat, she resumed thrusting the plastic length in and out of her, under the nightdress. I timidly went to pull the hem of it away, but she gently pushed my hand back. It was clear that we weren't going to talk, so I sat back to watch Aw sue closed her eyes and thrust back and forth with her hand.After a minute or two, she looked at me again, and softly smiled. She was staring at my crotch, as I slowly. My cunt dripped freely.I felt Sam’s balls tighten and I gently pulled down on them to prolong her beautiful agony. I knew Sam was close, and I wanted her cum - as much as she could produce. I love her cum.I have become Sam’s cum slut.Samantha groaned and called out my name as she neared her climax. I leant down and took her swollen head just into my mouth, drooling so her cock remained slippery in her hand. I licked all around the sensitive head as Sam stroked faster. I sucked hard and Sam’s. Carefully her hand guides me onto it; lips dragged wide, tongue pressed into the base of my mouth, tip rubbing against my upper palette. She is huge, demanding, insistent: exactly as she ought to be; exactly as I need for her to be; exactly as our entwined destinies dictate. I feel her feet shuffling wider, her phallus boring into my mouth, grinding into trembling and undeserving little me. My lips are drawn back into an uncomfortable sneer, cockhead pushing towards the back of my mouth, her.