Five of their students could graduate if they completed this class successfully. Bob wasn't worried about that because based on what he had seen nobod... would get less than a C in the class at all. Kids COULD learn, if they were motivated to do so.But while Bob and Cecelia still spent time together outside of the classroom in that last week, there was less time to fool around. Their circumstances were a little different than would be usual for most teachers in their situation. There would be one. I needed him to come, to squirt his tasty young cum to me. I could feel his lovely cock going down my throat as he fucked my mouth with that big dick."Oh, Mum! I am going to cum!" he shouted out as he began to shove his hard, young cock to me faster. "You are making me cum! Do you want me to pull it out?"I was shaking my head no as I felt his cock start to swell, the big head so silky and smooth as I sucked on it greedily and I felt that young cock start to throb. I was sucking on it as I felt. "No, no playing with yourself, just watch!" I commanded, as I got into my performance. "That cock belongs to me."He grinned ruefully and obeyed, sat there on the couch with his dick protruding loud and proud and watched me strip for him. I took my time because I was simply loving this. The hunger in his eyes as they followed my every teasing move, a need so intense that he was almost drowning in it, he was mesmerized and bewitched by me, just drinking in the spectacle of my delicious body being. Since I would be sitting on my sons friends lap for the next hours, I wanted to wear something real comfortable. My jeans would be too tight. Plus it was too hot to wear them. I looked in my closet. As I was going though my clothes I found a summer dress I brought. It was the short type with sleeveless arms. It buttoned up in the front. I unbuttoned it and put it on. When I finished buttoning it up, I noticed it showed my bra to much. I took it off again. I removed my bra and put the dress.