My attractive stepsister seeks my assistance for her sex education project and I climax within her

My stepsis came to me for help with her sex ed project. She had a lot of questions and I was more than willing to give her the answers. I started off by explaining the basics, but soon enough, she wanted to see it in action. I took out my throbbing dick and showed her how it worked. She was fascinated and couldn't take her eyes off it. Before long, she was sucking on it, her lips wrapped around my shaft, her hands working my length. Then, she spread her legs and let me plunge into her tight pussy. The sight of my big dick filling her tiny hole was enough to make me cum inside her. It was the perfect way to end our little lesson.