You come home to step-sister in her panties and a T-shirt dancing around getting some cardio in. She says to sit down, she doesn't mind if you watch. Before long she is getting hot and removes her shirt exposing her plump full breasts bouncing. Then her panties. She tells you that fucking is better cardio than dancing and that you should join in. She demonstrates on a big black dildo what it'd be like to fuck her and cums all over it while you watch!