I grabbed her ass with both hands taking control of her thrusts making her bounce up and down as I thrust my hips upward driving my cock in as deep as...I could. Marcie got up and turned around sitting on my cock and started bucking her ass up and down so fast she was just a blurr. I held out for about two minutes before shouting "You're going to make me cum Marcie, I can't hold it any longer." She said "That's good, Ive already cum twice." I reached up grabbing her tits and pulled her down on me. The agents, being the largest group, yet probably the fastest to be done; were staying in the mess hall. I was taken, along with my parents, to the medical area.As soon as we were situated, my father asked, "How much of what you tell us would get us in trouble with law enforcement agents, how much is a suggestion, and are you going to tell us the difference?"The man sitting across from my father smiled."I read about you on the plane. Questions that are pointed and relevant, but usually not ever. What with one thing and another, it had been some time before anyone (even me!) had been anywhere near my cock and the feeling of being exposed in front of the nurse was not unenjoyable. I could feel my cock start to thicken but still not being entirely sure where this was going, I didn’t really want to get a full hardon in front of the nurse so I laid back, closed my eyes and tried not to think about it too much.This became harder however as, after washing down my arms and across my shoulders,. I felt a movement in my lap so I glanced down and stared horrified as a bulge had emerged. I quickly covered it up with my hands. I hadn't realised that I would get an erection when I was turned on.The gym teacher, Mrs Andrews, a forty year old woman looked at me with concern. "Cassandra, dear, are you alright?" she asked.I nodded. "I guess I just have a cramp," I said."Dear, you're burning up and sweating, are you sure you've just got a cramp." I'm sure,"I glanced over as a group of naked.