As he continues to the mark the assignments I try not to stare to obviously at him. I lick my lips to moisten them as my mouth becomes dry. After what...seems like an endless silence, he takes the papers and places them in a filing cabinet behind his desk, in front of the large window that looks out onto the campus. Then he looks at me. "Do you have any idea how serious this is, miss?" "Yes, sir." I respond. "I am your professor. I could get in a lot of trouble with my superiors if someone. It was mindblowing ? not to be compared to anything I had experienced until then. MyMistress had opened the door to the next higher realm in the heavens ofsubmission for me. Now I longed to enjoy the fruits of this realm as frequentlyas possible. Knowing how much I was addicted to it, my Mistress generouslyreserved half of Her brown cream for me. The other half was reserved for Tina.To Her additional enjoyment my Mistress from time to time also ordered Tina tofill my toilet mouth with her brown. Her moans also sounded different, Though I just brushed it off and kept slowly pounding her tight pussy. As I was getting closer to finishing, I started pounding her little pussy harder and faster, her pussy was griping my cock like something I never felt before, then suddenly she had her first orgasm during sex ( normally I have to eat her out or finger her for this to happen) This caused her pussy muscles to clamp down on my cock and I couldn’t move it anywhere, I could only enjoy the feeling. She had watched the metals pour into the hole in Ben's chest and now she had no doubt that for some reason they had formed themselves into some kind of alloy and either encased his natural heart or completely replaced it. Kirsty's worried voice intruded and snapped her out of the sense of awe she was feeling."What's happening? Why have you both just zoned out on us?"Sarah dropped Ben's hand and opened her eyes. She could see her twin was smiling at her and he even managed to shrug his shoulders.