A perfect swan dive, no need for the pool of course. I barely uttered a groan when my cock spasmed in her mouth and I could feel the first splash of c...m leave me. Her lips tightened around me, determined not to miss a drop. “Oh my!” Oh my? Did I just hear 'Oh my?' Who the fuck is that? Monica stopped midstream and looked toward the voice, releasing me from her mouth. There is no stopping a runaway train and the next spasm that rocked me shot thick cum onto her lips and chin. I peered around her. J was the head footballer, we trained the same amount of time each week and because my squad represented his team, we were together 24/7, so we spent every minute together, I was the popular one of the squad, tall, curvy, firm but big 34CC boobs, a firm ass and hair so long it reached my ass in a high pony, and A.J was the same, tall, muscular, deep voice and incredibly handsome.It started one Saturday morning before cheer leading and football practice, me and A.J were alone as mum went to work. Mom drove us to the starting point on Sunday in her Suburban. It was about an hour and a half drive. Bev and Vicky were with us, talking about guys in the back seat the whole time. Jimmy and I were in the middle seat but we didn't talk about a whole lot other than what we brought with us.Mom pulled off the freeway into a rest area. This was our designated starting point. The girls got out and we got our backpacks on with their help. Mom brought out a couple of transponders and flipped the. We set our alarm to wake us a couple hours earlier than our mom's usual time of getting up, so we can go back to our respectative rooms before mom gets up. It's been working so far, so why stop, right. It's a Saturday morning, and I wake up really early, a couple hours before dawn. I realize that Sara has cuddled up closer to me than usual & that my morning wood is now lodged in her ass crack. I kind of like the feel of my hard cock being in my sister's crack, so I begin to slowly and gently.