The first part of the morning was business as usual but come dinnertime the party started. At around 3pm most were either tipsy or virtually pissed, D...nna was talking to her boss, Martin, about the up and coming promotion.Martin said "I can hold your interview in my office right now if you'd like", she said "Ok", as they walked down the corridor to his office it was a lot quieter, away from the hussle and bussle of the party. Martin sat behind his desk and Donna sat facing him, he asked her the. Sue got a beautiful opened-back designer dress in daring white with a deep V-front. It cost nearly two hundred dollars.They bought skirts and tank tops, and they picked out boxes full of sexy lingerie.Sue looked especially good in a cropped, knit-cotton tank sweater with a banded neckline that slipped sexily off one shoulder. It was bright coral, and she matched it with a coral, white-striped cotton skirt.Jamie had been excited about the prospect of doing some hot pictures for Sue's uncle,. "Oh yes, I do Nat. I like a lot."She bent just a little at the waist pushing her mostly bare bottom towards me. "Do you think I'm a bad girl Jimmy? Maybe so bad that you are going to have to spank me again?"So that was her game. If she wanted to be spanked she sure was with the right guy. I laughed as I pulled her close to me. I squeezed her shapely bottom hard pushing my erection against her stomach. "Oh yes little girl, you will be getting a good hard spanking. Afterwards I am going to fuck. But now my sister was practically sitting on my naked cock, grinding her pussy on it. My hands and my mouth were on her tits this whole time. Pinching, biting, and sucking her nipples. I made my way to her short while she was humping my cock. It didnt took long her to stop humping, she let go of my waist and I took her short out of the way. I really want to put my cock inside her pussy this time. I knew I cant stop myself either in this situation. Her arms were around my neck while her head is.