He sat on the edge of the desk opposite giving her instructions all of which she obeyed, pulling her panties to one side and finger fucking herself wh...le telling him how it felt, licking her fingers, whatever he asked her to do she did.He sat there watching her play with herself for a few minutes before moving slowly toward her unzipping his trousers. By the time he was next to her he had his hard cock in his hand a few inches from her face. She looked up at him and he smiled back saying "You. It was agreed and a time was set for Casey to meet us at our house.Of course like always I put the idea out there to Kim that tonight could be the night and she gave me her normal maybe. The time came to get ready to go and I talked her into at least wearing some sexy clothes so that if nothing happened at least Casey would get an eyeful and I would be turned on knowing that. Kim is 5'7 and 150lbs. She has a little tiny belly that she says makes her fat, but she is a definite hottie. She always. She pulled the dress on, she didn't look too bad really, and with the heels, well, I hadn't really noticed how tall she was before being as she had been barefoot, but hell she didn't look like a tart, like I planned, she looked classy, the damned dress seemed to match her hair somehowShe didn't like the heels, she wobbled like she was drunk and she looked like a classy lady that had a few too many cocktails.My plan was wobbling, and what was worse I was hungry, I went to the kitchen, found some. "Like what you see" she asked and my cock became so hard.I grabbed my sister and started to kiss her, pulling her tight. Her lips so soft, like oil against mine, her arms around my neck so tight. I looked in eyes after the first kiss then she pulled my face to hers with a desperation born of love.Our embrace was somehow more intimate after last night. I lowered both my hands and cupped her round ass, pulling her groin into me. Feeling her ass like a girls breast."I love when you touch my ass.