The gym's empty, save for a petite blonde and her trainer. She's on all fours, her tiny frame dwarfed by his massive cock. He grabs her hips, his fingers sinking into her soft skin as he drives into her, his huge cock splitting her tight pussy. She gasps, her petite body jolting with each thrust. He pulls out, his cock glistening with her juices, and she eagerly sucks him clean, her small mouth struggling to take his immense size. He pins her against the weight bench, his big dick impaling her, their bodies slick with sweat as they fuck hard and raw in the empty gym.