It was another day of endless workouts for him. He had another boxing match coming up and he wanted to train as much as possible. His little niece snuck down to spy on him. She always thought her uncle was so strong and sexy. She loved to watch him work out. He always got so pumped and sweaty. His muscles rippled and she could see the bulge of his cock through his tight work out pants. Today she decided that she would tell her uncle how she felt. She walked over to him and let him know that she wanted to start a new side to their relationship. She placed her hand on his cock. He immediately began to grow under her touch. She knew he felt the same way about her that she felt about him.