With a big smile she slowly crossed her legs giving me another hint of her tight young pussy through her soft white panties. With another cheeky smile...she said, “Well, seems you have come on a special day, both my parents are out of town, and my sister and I were planning on having some, well... fun.”I took a big gulp of the ice cold water as my cocked started to twitch again. What does she mean fun? She can’t possibly mean the same kind of fun I’m thinking off… can she? She leant over and. .."Inwardly and visibly Sam smiled; he loved it when Sheila "hammed it up". They were in for a fun evening, he could tell.Later, during a slower number, he held Sheila close to him, both arms round her waist, she with both arms round his neck, cheek to cheek, comfortable, happy. As she nuzzled his neck and playfully nibbled his ear lobe, he felt the inevitable stirring in his loins. Sheila did as well."Sir!" she said, a look of mock outrage on her face, "I'll have you know I'm a married. The ones who saved the lives of men on sinking ships ... as much as they made her knees weak and her mouth dry ... they didn't hold a patch to what she felt when she looked at her twin.The walk to the store ... he took her hand crossing the street ... when he opened the door he ushered her in ... just a hand to her waist and a little guidance. He held her hand to help her to her seat on that so tall stool. He ordered a Chocolate Cherry Coke ... the big size ... just to watch her drink it. Cathy’s mouth was hanging open, and her glazed and unfocused eyes were fixed on the bare wall in front of her. Her hair was unkempt and sweat-soaked, and rivulets of moisture ran down the groove of her spine and the valley of her cleavage. She trembled and shook, her flanks quivering under the impact of each penetration, and yet she strove to arch her hips wider apart, to push her ass up higher in the air by standing on her toes, and in every way to make herself more open and more accessible.