She answered fast, maybe she had been expecting someone. Her eyes went wide at the sight. I shoulder barged her back against the wall behind the door ...efore she could react properly. My right hand punched her hard in the gut, enough to drop her down and take the fight out of her. My left clamped hard over her mouth. It did enough to stifle the scream. I had prepared a strip of duct tape, which I wound around her mouth. Spinning her around before she was ready, I had her arms zip cuffed behind. I wanted to see what he would do further. He was flushed all right and was hesitating to take his cock out. But when he saw my exposed cunt he lost his control. He hurriedly pushed aside his short and took out his hard cock. Ohhhhh what a cock he had! It was almost 8 inches long and thick as my wrist (6 inch). His cock was circumcised and I could see his cock-head very clearly. The crown was well shaped and thick with nice deep ridge on the lower side. The cock was full of blood and the veins. “M...mom, I think I can't hold on anymore!”“Well, then don't. Just let it all out!”With a moan of pleasure I came all over my mother'shand. As far as I was concerned, this was the hardest I had ever cumin my life. My mother somehow knew exactly what to do and keptthe pressure of her hand perfect, even while I was already cumming. Itwas like she was trying to wring everything out of me. It was the first time I was immobilized frompleasure alone for a longer period of time.“Oh, you came so much!. "I noticed a sign on the door which read, 'When Red Light Is On Keep Out!' Above the darkroom door was a red lightbulb, currently unlit."I take it that you are happy to continue with our arrangement, Cat?"I returned an uncertain smile, replying, "I don't know yet. But I'm here and really need to pass this course." Well Cat, depending on how far you want to go, will boost your end of year mark."I looked questioningly at him."You need at least a C to qualify for a bursary. For that you could pose.