As soon as I saw it, the sensation she warned me about, came over me uncontrollably.“Oh mommy, what is happening? I yelled. “It feels so strange...and nice” “You’re going to shoot your cum on mommy’s pussy. “ Her voice was encouraging but also demanding. I’m going to stroke you faster.” Within four strokes my whole body convulsed and I felt my asshole tighten up. And then there was white-hot liquid come through my cock in gobs that flew onto my mother’s tits, then her belly. The most and. "You're not going anywhere," she said, her bare tits heaving."Right," Lynne giggled. She stripped quickly, then displayed her young naked body. "You like looking at me, Aunt Ellen?" You're both insane," Ellen said. She stared at Lynne as she posed lewdly. "My God! Let me out of here!"Janice threatened her with the whip. "Later," she cooed menacingly. "After we treat you to the fun you've been missing all your life." Take off your skirt, Aunt Ellen," Lynne said. "I wanna see your pussy." No!". I had to laugh because I was not as well- endowed as some of the jock-strap dudes that she had pulled down her panties for inside the privacy of the back seat of a car.My sister had confided in me that the guys with the really big dicks didn’t last as long as me and that she needed that extra time to make her orgasm a certainty.I was beginning to think my Mom suspected I was bonking my sister from the way Sis kept running her fingers through my hair when she thought nobody else was looking our. She responded with a loud, vigorous orgasm, but afterwards she seemed so distant and disinterested that I never knew if she took me seriously.On a particularly hot July weekend, she had to go to Miami Beach for a three day conference. When she got back I could tell she was different. My wife seemed more self-confident, a little more assertive. When we had sex that night she told me that something special happened on her last trip. What she told me made me so excited that I came uncontrollably.