To my amazement, it was this incredibly skimpy, sexy underwear set from Ann Summers: Fushia pink 38E bra and size 14 thong. That got me excited. The ...next morning I woke up to hear Kayla getting dressed and when I glanced at her bent over naked arse, she was just stepping into those fushia Ann Summers thong and already had on her matching bra. Then she stepped into her jeans and threw on her tight black tank top. Then she went downstairs and I heard the door shut behind her. She’d gone out.. Finally, I leaned over and gave her a kiss which rapidly progressed to spit swapping.I pulled back, “Let’s move to a more private place.” We grabbed our drinks and the blanket and walked back into the darkness. It was cooler but the blanket was large enough that we could lie down together and wrap it around us.The kissing began again in earnest as did her fondling. My fingers were in her pussy which was getting wet in readiness. I whispered, “I bet you taste good but it’s a bit awkward right. He smiled and even though I had just come I was still horny. He took something out of his pant pocket. It was Vaseline! He turned me around and reached from behind cupped and squeezed my nipples hard and kissed my neck. Again my knees buckled. My God I thought I a whore! He asked if I'd ever had anal before. Now I was scared and horny. "no" I whimpered. He said don't worry. Suddenly I felt his finger probing my ass and I could feel the Vaseline. He talked dirty to me and told me to gently hump. Even as I think that thought, I become more intrigued by what is going on. All of the sudden, dad shifts into overdrive, beating his dick fast and hard, while fixated on the TV screen. My eyes break from him to see what has gotten him all excited. A second girl joins the scene. She is about 5'6" long silky brown hair, full perky tits, tight waist, curvy hips and long thick legs. The camera zooms in on her faces as she sucks another cock. I realize she looks a lot like me...She is on her knees.