I joined a diet class and I was the only guy there, so it was a bit of a harem situation! There were a lot of young wives with big butts sticking out and accentuating their cracks from the training that focused on tightening their butts! I can't resist getting an erection in front of that scene! The frustrated young wives get turned on by the erection they see in an unexpected place! They actively seek out the dick, slamming their big butts into it and sweating in the cowgirl position! Unable to resist the big butt piston and cumming inside, the young wives get even more fired up and devour the dick to the limit!