Gym, coaching masturbatoire

You recently moved to a new place (with your wife) and decided to try the complex gym. There was an unexpected neighbor, a young flirty girl in her 20's, big boobs, great legs and an incredibly huge and round Brazilian ass. She noticed the boner through your pants and encouraged you to masturbate to her commands. Don't worry she's gonna guide you well with her kinky jerk off instructions.