Step sister seeks assistance with homework from step brother, who provides a handjob and orgasm

Step sister came to her step brother for help with her homework. She was struggling with the math problems and she thought that her step brother might be able to help her. Step brother agreed to help her but he had something else in mind. He wanted to teach her how to pleasure a man and he started rubbing his cock through his pants. Step sister was surprised but she was also very interested. She had never seen a cock before and she wanted to know what it felt like. Step brother took off his pants and showed her his big cock. Step sister was amazed by its size and she wanted to touch it. Step brother let her and she started to stroke it. He showed her how to give a handjob and she loved it. Step brother came on her hand and she was very happy.