To Mary I said, "Now watch carefully, dear."I heard Mary's breathing stop as I slowly pushed my hips forward and she saw Ali's vaginal opening slowly ...stretch over the bulbous invader, then a small gasp as the head popped through and her pussy snapped tight around my shaft. I was planning to let Mary watch as I slowly let my cock slide relentlessly toward Ali's cervix, but Ali spoiled the suspense by driving her butt back forcefully into my groin, instantly burying me balls-deep in her hot tight. "Morning love." He sounded so sincere, "you feeling ok this morning?" He asked as if he didn't remember last night or any other night when he beat her. Last night wasn't as bad as others. She didn't have to spend the night in the hospital this time. "I'm ok, how are you?" she kept her face and eyes away from him. He hated it when she cried; normally he hit her harder when she did. "I'm doing great, better get going if we're going to be on time." He started toward her. She knew he was only going. I slowly put the head of my cock near the entrance of her now soaked pussy and slowly penetrated it her moans of ecstasy was all i needed to rock my cock in and out of her pussy she started thrusting forward to meet my own thrusts and we were fucking and i mean fucking in and out and hearing her say YEA FUCK MY PUSSY YEA THATS IT MMMMMM FUCK YOUR COCK IS SO BIG OH FUCK!! After awhile of fucking we decided to change positions this time she was on top standing over my cock she slowly lowered her. Peering in, i saw exactly what i expected to see, there was Katie, completely naked, lying on her bed, gently massaging her little b-cup tits, and rubbing her little bald pussy with a small purple vibrator."Hey up sexy!" i said stepping into the room to get a better look."No boyfriend tonight?" i then asked."No. he's busy... with his mates!" replied my sister unhappily."Well, his lost then!" i replied, trying to sound sympathetic towards my sibling, as i stared at her beautiful slim naked body,.