Jacking it to Cheyenne Jewel, workout queen

You bought an exercise ball for Cheyenne and she is excited. She really loves to exercise and stay in shape. She flexes her biceps and you are beyond impressed. This ball will be great for stretching and she hops right onto it and tries it out. Cheyenne bounces up and down a bit as she starts stretching. Now she notices that your pants are bulging. Did you get this ball for her just so you could watch her? Cheyenne is almost your step daughter and she has decided that you can watch her only if you jerk off for her. You agree and when you show her your dick, she is happy with what you have to offer. Start stroking it. She knows that some visual inspiration would be helpful, so she takes off her sports bra to show you her small, firm tits. Again she flexes her biceps for you. It is clear that she works out. Do you want to see her glutes?