The doctor continued the filming at different angles, I kept playing to the camera while Joseph was hammering me from behind.
The doctor came in front of me and offered his cock which I gladly and obligingly swallowed. He started talking to me.
"We have both got to know each other very well over the time you have been here, but it is important to me that we keep our relationship between our selves. I am called Greg and you may only address me as that when we are alone, other wise it's Sir or doctor, for us to deepen our relationship I will only call you Rob when we are alone, do we agree?"
As I had my mouth full I just nodded.
I have also arranged that I will come over to the island to de brief you, not that you will have any briefs." he laughed.
"I have to tell you that the guards here have heard about our progress and they all want to try you out, as I have to give a general report to the powers that be, so that the project is ratified. Most of the guards are normal guys, but a few of them are quite brutal, when those ones are fucking you I will be in attendance, as you are now an important asset. This has been approved at the highest level."
Joseph at that time was ready to flood me with his load, so I started to pull him in deeper inside me to be able to experience another internal orgasm, at the same time my throat muscles where doing the same to Greg's cock, I was now a "pro" as Greg had said!.
Joseph unloaded into me and I felt my insides swell with his huge load, but only tasted a flow of precum from Greg, which I was pleased about. My prostate reacted well to this as I experienced another internal orgasm which was stronger and I seemed to blank out a bit longer this time, maybe it was the size of the load, I thought later.
As Joseph slowly softened and pulled out of me, I felt the familiar feeling of cum dripping down my inner thighs.
I felt a warm sponge cleaning me up, and then warm lips on my backside gently kissing me and it wasn't Greg.
"Lets go back to the medical centre and I will give you an enema to clean you out, I don't mind sloppy seconds if its my cum in you, but not anyone's." I was helped off the fuck bench and walked a bit bandy legged with Greg to the centre.