I sat heavily down on her bed and pulled her roughly over my lap. It was at that second I realized that I was very aroused and my cock was hard and po...ing into her. I pretended that I hadn't noticed and landed a very hard whack on her ass with my hand followed by another and then another. I heard Natalie begin to cry and that's always been something she used effectively against me and this time was no different."I'm sorry honey," I said feeling genuine sorrow, "I guess I got a bit carried. Our parents are rarely home. Mother is a Real Estate Broker and rarely comes home before 7:30 pm. Dad is a State Senator and takes his job seriously… or he just doesnt like to be home. My favorite TV show is Jeopardy which comes on at 4: 30. When football season is over I rarely miss a show during the season my sister tapes it for me. Our typical afternoon goes something like this. We arrive home at 3:30 we grab a snack then head for the den and I plop down on the recliner and turn on the TV.. When all 3 of us get back together after the 2 week away period, I like to do something special to welcome her home, this Friday night I had something planned. Once they were home, I gave them their orders as to what I wanted them to wear. Both were to wear a full dress that covered down to their knee’s, a g-string, leather collar heels plus their hair the way I like it & make up.When they were all done, we got into the car and headed for Watsons Bay, to eat at Doyles. The weather was in. There were love notes in his books and desk and once when he bent over in a crowed hall someone grabbed his ass. Every one of his classes was booked solid. The principle had commented several times about this but just put it down to the push for science education in general. We all know the science involved here, the science of male and female attraction better known as sex.Things had gotten even worse as the weather got warmer and the skirts got shorter. For the last two months he had.