My mind reeling as I felt his hugeness violate me. He pushed in even further this time before withdrawing and pushing again. I cried out as he pushed ...ven more into me this time. I began to whimper incoherently as he thrust again and again, my hands to each side of me, tightly gripping the bed, bracing myself against each thrust. Andrew then lost his control, for he thrust hard and deeply into me, withdrew only the slightest and thrust again, his balls audibly slapping against my upturned ass.. I couldn't hear what shesaid but she was talking to him and pointing at me. He kind of lookedsurprised, nodded his head to her and walked away.My sister came back and said to me, "Well, I guess the boys like youBobbie."My brother asked "What did he say?" Well," my sister said, "First I asked him if he was checking out mylittle sister and he said that he was. Then I told him that my littlesister was a sissy and not a real girl. That surprised him and then saidhe was going to get his friends and. As I was walking back, Aimee ran alongside of me and asked, "What was that all about?"I told her I would tell her later as we were walking home and hurried inside so I could go pee before the final class bell rang.Later that afternoon as we were walking home, I told Aimee all about Debbie, and how she had arranged her panties in front of me and didn't even care that I was standing there."Well, what did you expect her to do," Aimee asked?"I don't know," I said, "But I didn't expect her to show. My sister is little bit oblivious to her surroundings (probably because she is use to being the only one home since Mom and Dad head out for work by 6am every morning). I say this because since I’ve been home I’ve noticed that she always seems to run around the house nude or in her bra and panties. At times I think she forgets I’m home for the summer.Now over the years my sister has caught me in the middle of masturbating (but not the end) from time to time so it was natural and not a big deal,.