Voluptuous step-sister learns realistic self-defense techniques

This video features a voluptuous vixen who's a college student, and her step-sis is joining her in the dorm. The step-sis is eager to learn self-defense, and the guy next door offers to be her teacher. As they start practicing, the girl gets down on her knees, presenting her ample ass for the guy to grab. He takes advantage of the opportunity, pulling her hair back and thrusting into her from behind. The girl moans in pleasure, her big tits bouncing with each powerful stroke. She then turns around, revealing her huge, round ass. The guy can't resist and takes her from behind again, this time with even more intensity. The girl then mounts the guy, riding him hard while her big tits bounce up and down. The guy is impressed by her skills and takes her from behind once more, this time in a doggystyle position. Finally, the girl kneels down, ready to take the guy's big cock in her mouth.