Everybody payed attention.The high point of the class was a fluoroscopic video of a guy’s penis actually penetrating a girl’s vagina. You never se... the actual guy or girl, but the moving x-ray shows his penis sliding in and out for maybe a minute before it pushes hard into her, the glans expands slightly, then ejaculates several shots of semen. While the video was professionally narrated and intended purely as a clinical demonstration, to the volatile teen mind, fucking is fucking, and it was. I took her home where we had a little lunch that we had picked up on the way until her mom would come home in the early afternoon. Megan told me her mom worked half day, her father had left them a considerable amount of money so she was more working for the occupation than for financial necessity. And every day after work her mom – Christine – would do some workout. Gym, yoga, go for a run etc. Well, I thought, it was no wonder she looked so amazing. When Christine came home 2 hours later,. This was serious.“Sam, Sam, Sam…” Tracy absently stroked Sam’s hair as she would a dog’s. “You know how John and I look at you, but you just brush it off. That’s what hurts. You could at least stand to acknowledge it.”Sam’s jaw clenched.Well. That was one question answered and a whole lot more opened. Sam and Tracy both knew I was into Sam. But Tracy was too? And Sam knew all this? Was I really so oblivious as to miss this by-play in all of our interactions?“So today I figured I’d give John and. But the amateur girl only knew to move her ass up and down. It worked in the beginning but to make him cum, she had to up her performance. I thought she would eventually do it, but she was still a novice.Me: Stand back! Let me show you how it’s done.I pulled my legging and white panty exposing my big round ass cheeks – thick and tight. The boy’s jaw dropped when he saw my booty. His already tight cock twitched when it felt the heat coming out of my ass.The girl jealously looked at me while the.