My tits flailed before I pressed them against the cold laminate flooring. My face was down and my ass up. The slapping between his balls and my pussy... increased and I couldn’t help but twist my head to the side and watch as he fucked me. His face was red as he pumped my cunt with his cock and his breathing was just as deep as mine. His thumbs remained in my back dimples and my skirt was still hitched up onto my back. I moaned at him, letting him know how good he felt inside my body. With one. "Uh-oh, Marla, I'm gonna..." and that was all I had time for as my hips bucked under her weight and I started cumming. A brief look of disappointment crossed her face, then she started riding my cock, scooting forward and back and reaching back to stroke me. Every little move she made just made my balls throb and spasm that much more, and I was reduced to making incoherent mouth noises...The next thing I remember I was curled up on my side, shaking and crying like a baby. Marla was spooned. All through dinner, we talked and smiled about practically nothing at all. We were finished and holding hands across the table when we got a text, “Meet us at the van.”I had a last drink of water, left money at the table, and we walked out arm in arm.Again, we caught our parents making out.To my dad I said, “I hope you’re carrying protection, Sir?”“Yes, I am as a matter of fact, how about you son?”“I got a dozen on the way out of town, just in case, Sir!”The smile that went to my father’s face. I will be using pressure points to deaden most of the pain. I am sorry that I cannot deaden all of it.” She then touched a point on my back as I felt my head go partly numb. Then I felt a small pressure at the back of my neck. “Moving in now, almost there; are you feeling undue pressure Doctor Gance?” She asked.“No except for the start I haven’t felt anything but some pressure.” I told her.“Now extracting tracer, please do not move Doctor Gance.” Sheila said as I felt something pulsing moving.