'helping' out

Katy was huffing and grunting with the effort she was exerting. Her shapely ass bouncing up and down vigorously. John decided he needed to see her massive tits bouncing around as well. So he decided to walk around Katy and her car. "Just taking a look at the progress m'am" he said all the while. He walked around to the side. And was presented wit a stunning side view of Katy's massive assets. But when he came to the front he was rewarded with an even greater sight

Katy's massive breasts were swinging around wildly in their cloth constraints. Beads of sweat were forming on her tan skin, some of them rolling down towards the endless crevice in between her large hangers.

John had finished his lap. "This doesn't seem to be working miss". How about I give you a little hand?" he said with a devious smile on his face. "It's *huff* about *huff* damn *huff* time" Katy replied exasperated. But what she wasn't expecting was John getting behind her and clasping her exposed midriff with both of his hands.

John felt a surge of energy within him as his hands felt the smooth warm touch of Katy's skin. He then positioned his pelvis right behind Katy's gyrating ass, and pressed his engorged cock in between her asscheecks.

"What the..? What is the meaning of this?!" Katy exclaimed angrily, stopping her movements instantly. "No! don't stop M'am you've almost got it!" John responded. "But..? But..?" Katy said.
"No but's, it's almost ready!"

Katy felt confused. But decided she would keep going. Reluctantly she resumed her movements. And started pressing her massive ass onto Johns cock. Both her asscheecks fully submerged John's cock in between them. Moving up and down rhytmically increased the pleasure John was feeling. She kept shoving back her shapely ass, and John was getting close to cumming with every stroke of her massive ass.