His cock was out now and she was rubbing it vigorously. He managed to pull the nightie up and she felt his hand on her bare pussy. Suddenly a bit emba...rassed, she said, "I guess i forgot to put on my panties," and giggled girlishly. But she loved it as he played there and finally pushed two fingers deep inside her. Eventually she took his hand away and pulled him close. Holding his cock straight out, she put it between her legs and closed her legs around it. His hard shaft was flat up against. “What are the three basic theorems on the interchange of limits?”My hand shot into the air even before my two friends, Mai Shun and Deborah Dane could. They were nearly as smart as me, just behind me by a smidge. We studied all the time together, just dominating school and wrecking the bell curve for everyone else.“Rebecca,” Mr. Jackson said, a big smile on his face.“They are... One, the interchange of a derivative and an integral. This is known as the Leibniz integral rule. Two, the change of. She looked different to me, more womanly, more intimidating. She was tall and beautiful before. Now she was also a woman. Wow.Chuck had told me he was hoping to get Sydney to do it since it was a party. He came over early. We went to my room and glanced around, "Help me clean up." What?" I asked him. "Why should I clean my room? My folks aren't coming back till Sunday," I said flabbergasted."Because of Sydney," he said.Then it hit me. "You aren't going to do it in my room," I said."Don't be a. There was a bounce in her step I was sure hadn't been there before.A couple of minutes later, the door opened again. I had expected it to be Yvonne or Chloe, or even both, but Savannah walked in.Alexandria's sister stood staring at me in disbelief. For that matter I was having trouble understanding why she was here instead of one of my girls. What was worse, I felt a lurch in my gut at the sight of her. She wasn't dolled up, just wearing jeans, boots and a large heavy coat. I was sure there.