Mr. James, the step-son, can't keep his eyes off his hot, big-booty step-mom's culona as she works out in the gym. When she catches him staring, she misinterprets his gaze and thinks he's judging her. In a fit of anger, she challenges him to a workout contest, promising that the loser will do whatever the winner says. Little does she know that Mr. James has been fantasizing about her big ass for months, and he's more than ready to claim his prize, fucking her hard and deep, just the way she likes it.