She slowly reduced her resistance allowing the mischievous granddaughter to push his shaft inside my sister’s lubricated anus humping as hard as he ...ould to achieve a beachhead inside her rectum.The poor man’s balance was not quite satisfactory, and he had to be helped by Lizzie and myself to stay on top of her pulsating body in the throes of passion. At some point, I allowed my hand to discover the secret of no undies beneath the choir girl robe and I lifted it in the rear to take sweet. He lay down beside her.There was a scratching on the door.The door pushed open and Bing shoved his nose in."Is it all right?" Mary asked."To have Bing in here?"She nodded."Sure."Mary patted the bed beside her and Bing came into the room and climbed up on the bed with them."How's man's best friend?" asked Swede affectionately."Girl's best friend too." What do you mean?" he asked turning to look at her.Suddenly, she felt very shy. It was hard for her to tell her husband about her lust for. Hmm, no purchase for her arms, maybe if she turned onto her back? Yes, that seemed to be working. Now, just a bit more. Ah, the hips. Bugger. No way that they were going to get through.Okay, try it on her belly. Ah, can't turn back around. So back out on your back, you stupid bitch. Hmm, no purchase for the arms, and the bust is too big to get back out. Strange, it flattened enough for her to get it in. Can't get further in, can't go back, and can't turn. Wonderful.After a few minutes of futile. She let out something between a sigh and a moan. She tried to sway her hips side to side, tried to move them up and down, anything to encourage him for more. She was ready, wanted Kevin to fill her. But his hand held her ass too firmly. All she could do was give into him, let Kevin have his way. They had made love only twice. It had been satisfying but…ordinary. That didn’t matter to her now. She was blindfolded, bound, excited, and she was his. She was there to do as Kevin wished..