As lovely as she was in high school, she had not been particularly, well, sexy. She had been whisp thin, flat-chested, and very introverted. As prom...sing a player as she was, Tom spent a lot of time with her. But, aside from maybe eyeing her little bubble butt from time to time, he never really thought of her sexually. Which was a good thing for a coach. But now. Wow. The “freshman fifteen” had been very good to Katy. Toothpick legs were now shapely, muscled pinions. That little bubble. Said to me just before leaving....you can watch movies on my big screen tv but ''DO NOT TOUCH THE TAPES THAT SAY'S PRIVATE ONLY''i said ok...it's all good.It was passed 10:30p.m. & i was getting tired so i got up to close all the lights but i saw a tape on a table so i said to myself i play this just until i fall asleep...let's just say i could not believe my eyes when i watched this video... i realized afterwoods that this is what Mr.Smith told me not to watch but honestly i could help. With the other hand, he clutched my left buttock cheek, groaning each time his pelvis rocked and his cock deepened into me. I responded with high moans, I couldn't help it as I heard myself squealing out like a real horny slut 'AH, AH!' each time he went in. As the rubbing got faster, I really felt like I was going to cum. 'Oh my god, fuck, please go in harder, I'm going to cum'. He started to pound me really hard, like REALLY hard, continuing to rub my bulging clit. I could feel the build up,. Still the practice was improving my skills and I had a couple of sketches the professor wanted me to build on. Then a new model came walking in to our third week class. All the guys, and several girls perked up because this model was a young trim co-ed. Then I had to do a double take as my eighteen-year-old freshman sister, Samantha, dropped her bathrobe.The stodgy old professor was up there pointing out how the light strikes her skin at certain angles. All I could see was the slope of her.