She massaged my cum into her skin, then pointed to me to move closer to her. I walked over, and kissed her exposed breasts. "Baby, I want you to fuck ...e right here, I need your cock to fill my pussy" Jen sexy talked. I thought, a blowjob is ok, but sex here and now, could be a big problem if caught. Jen grabbed my cock, massaging it, playing with my balls. Then she walked to face the back of the stairs, up her dress went, and her sexy ass shook to invite me in. I walked over, removing my. She asked me not to tell it to anyone. But after she did that i was not able to sleep. I was sitting on my bed. She was wearing a sleeveless and a tights. She teased me by putting her hands above her head adjusting her hair. I had an armpit fetish. Whenever i see a girls armpit, i get a hard on. Her armpits were shaved but still had the dark patch. My dick got erected which my sister noticed. She came near me, took my middle finger and put it in her mouth. She sucked it hard. I started. I walked in calling out Lizzy and Beth’s names, but no one answered. I was about to leave when I heard a noise from the back. So, I started moving that way when something jump out at me and I stumbled backwards, hitting my head on something and knocking myself out.The next thing I remembered was someone kissing my head and saying there, there. When I could open my eyes, I looked up and saw Beth kissing me on the head and then on the lips. I lay there for a few minuted when I noticed a weight. "I ordered it online," she said. "It's silk." It's beautiful," I said."Thank you," she said. "I got new jammies too. Wanna see them?"I nodded.She opened the robe and displayed what I believe are called Baby doll Pajamas. Be assured, they aren't really pajamas. Even at seventeen I could tell they weren't really for sleeping in. She stood up, holding the robe open. It actually looked a little like a bikini, except that it didn't hide anything at all. It was made of black lace, or something like.