He couldn't see much of Jody beneath his father's body, but he saw her hands rubbing against his father's ass and back and saw her legs go up around his body. Jody was humping back to meet his father's thrusts and her moans were the noises that had attracted his attention.

Then the lovers rolled over and Jody was on top. She sat up, her knees on either side of his hips as he lay beneath her. Her hands were flat on his belly as his came up and cupped hers tightly. He couldn't see her tits because her back was to him, but he saw her delightful little ass cheeks, and then she started to hump up and down.

He saw his dad's cock appear as his sister rose upward. It was humongous! Mark had thought his cock was big but his father's put him to shame.

He watched as Jody leaned forward and gave him a perfect view of her cunt with that fat cock sticking into it. Then she was sinking down on it with a delighted groan of pleasure, taking the long length of it up into her cunt pit. She started to bounce up and down on the cock, mewling with pleasure like a happy child. Her buttocks slapped down on his dad's thighs as he began to thrust up into her.

Mark's hand went into his underwear and grabbed his cock, which exploded immediately but did not soften. He watched Jody bouncing up and down wildly for long minutes. His dad grabbed her then, hauling her chest down against his and grabbing her ass with his other hand.

Mark was looking straight down the crack of her ass, watching as his dad's cock slid in and out of Jody's fuckhole. They rolled over again, his dad grabbing Jody's legs and throwing them back against her chest. He shoved her ankles up by her head and rose into a stiff position above her. Then he started to jerk his hips, humping in and out of her crotch hole as he held her open beneath him. His ass hammered furiously, driving his cock into Jody with what must have been painful speed.