I turned and kissed her. I pulled back and stood up. She reached up and pulled my shorts down, springing my cock free inches from her face. She reache... up slowly and wrapped her hand around my cock. Theresa looked up at me, licked her lips, and took my cock in her mouth. Theresa was an expert cocksucker. She quickly had me hard and close to cumming. She slowed down and then stopped. She rolled over and got undressed. She opened her legs and started playing with her clit. I climbed between her. I could tell by the outline it wasn't my wife. She's built pretty thick and has a nice, big ass. Whoever was under the comforter didn't have an ass anywhere near as big as hers. Process of elimination, it had to be Laura. She'd clearly been working on her deepthroat skills; she couldn't quite take me all the way but she could take about ¾ of my shaft now."Mmmmmm, Laura," I said, "I didn't think we'd get a chance this weekend. You sure we have time before they get back?" Wait, WHAT?!?" came. I lay there enjoying the feeling and even started popping a boner. At that point her hand slipped off. So I took her hand and gently and slowly began jacking myself off with it. With my other hand I carefully slipped my hand into the back of her pajamas and started caressing her ass cheeks. Id peeked in on her in the bathroom a couple times and loved her tight little ass, especially when she bent over to dry her feet after a shower. Luckily my sister was a sound sleeper so she didnt wake up. I. This got a full yelp! I was amazed that the little tramp was still wet down there. She opened her mouth to protest.“P … please, Sir …” she started to say.“Silence!” I barked at her, “I don’t want to hear from you. I’m going to untie you now and I’m sure you won’t cause trouble. Just in case, remember I have this.” I picked up the crop and held it in front of her face. It seemed to have the desired effect as she clamped her mouth firmly shut. I started by releasing her ankles. The leather cuffs.