A big butt is a big butt, but a married woman's big butt has a subtle melancholy to it... And to fully enjoy that big butt, you have to do it in cowgirl or doggy style. It's also worth watching how the perverted therapist naturally guides the woman to a position where she arches her back and thrusts her big butt out. Enjoy the realism that will make you want to rub your cheek against the screen.