Mistress Yara and I want to work our leg muscles today. Our training bag is already attached to the St. Andrew's cross. He hangs there helplessly. We take turns kicking him into the balls and keep pushing him to his limit. To make our training instrument last longer, we briefly stimulate his cock by spitting on it & wanking it. Then we continue giving him hard kicks between his legs! Ballbusting is a sport and we love to stay fit. Only we decide when this training session is over...