You’re deliciously grinding your hips against my body. I can feel your cock twitching deep inside of me. “You’re gonna pay for that.” You take...your dick out of my pussy, and slide it up my crack. “What are you doing?” I whisper furiously. “What do you think? I’m going to fuck you up the ass,” you respond. “No! Not here!” I panic. “I won’t be able to keep quiet.” You push my body against the wall and say: “Yes, you are going to open up your ass and let me in right here, right now. Do it.” You. Cindy was smiling. She should be smiling. I was complimenting her. "Yeah. I KNOW so. So far, it's been a good thing because Cindy's mom wasn't real big on education, so all by herself, Cindy's been able to stay at grade level, all without help, and apparently without trying very hard." I winked at Cindy.Helen popped, "It's a wonder she went to school at all..."I continued. "Since this year began, I've been watching her. That "Please, Mr. Dan, help me with my homework" act got thin after the. Melody asked me to fuck her ass this time, so I took her in my arms and leaned her over the hood of her convertible and found some a greasy old tube of KY in a tool box behind me. I put some on my cock telling Melody it was lubricating oil. Then I eased my cock into her ass, and started fucking her as she laid on top of her hood. Her ass was so tight as she squeezed her cheeks together.I began thrusting my cock deep into her bowels, slowly at first to allow her to get used to my girth. Then. From time to time over the next few days I had made allusions to stiff pants and my underwear when the family was together but nothing overt. I would always be sure to make eye contact with Mark when making these comments.A few more days passed and Mark was acting even more annoying than usual. He said something at the dinner table that really got me upset. It was that evening I decided to take this to the next level. I had my period in full flow. I took out my pad, it was a bloody mess, a WW1.