He's so very, very good at this, one arm behind me, holding me up to his head, the other caressing, rubbing, pinching, teasing whichever breast his mo...th left free. In its' spare time, one hand began rubbing my belly.A few minutes of this and I'm desperate for him to take further liberties. My knees quit pressing together in a ladylike pose some time ago and I'm making involuntary thrusts like I'm feel him already between my legs. He lays me back on the car seat and my nostrils fill with the. .. when I come across one of those intimate situations ... I should ... what ... disappear?”Sheila jumped in, “To minimize your embarrassment, we suggest exactly that, although given our tendency to be exhibitionists as well, you could always lurk around and watch.” She laughed. “We do that with each other, so you could observe as well. You would always be welcome to join in too.”“Oh, God. I don’t know whether I could do THAT. Could I just go to my room or wherever?”“Of course,” I replied.. Proceeding with this extended journey, I repeat the method played out by the rhythms of the road. I’m sure she must be asleep by now, it’s definitely late, but I’m driven by a beastly desire now and don’t care. I feel the hairs on my wrist fold having closed the gap to almost nothing. My heart pounds furiously in my chest and I feel my cock flex involuntarily through the tension. I look down and flex purposefully this time. I can see the silhouette strain under its canvas, demanding attention.. “Hi sis!” “Guys, the shuttle's here, we've gotta go,” said mum, as a small bus parked at the top of the drive. “Remember, no loud parties, no street races down the street and, for God's sake, don't burn the house down,” Colin quipped. Linda and I rolled our eyes at each other. “We'll be fine,” we chorused. “And please, mow that bloody lawn,” Colin repeated, as he and mum hurried out. We watched as our parents left on board the airport shuttle-bus, finished our breakfast and tidied up..