Jacob storms in

David was still admiring his reflection in the mirror when the bedroom door banged open and someone stormed into the room.

"Dad, we have to talk about what happened," Jacob says. "I mean that just wasn't...."

When he reached the bathroom door, he momentarily froze. Then David watched in the mirror as his son's eyes scanned carefully down the curve of his daughter's back to her nice full ass.

"Rachel?" he asked quietly? A heartbeat later his expression changed dramatically. "Dad? What the fuck? After everything that happened downstairs, now you've gone and switched to Rachel? Your own daughter?"

Even as Jacob attempted to lecture him on the morality of using his daughter's body, David could see his son's eyes returning lustfully to Rachel's ass. Although he had probably never considered it for real, David was pretty sure Jacob had jerked off to Rachel before. Probably more than once. Watching how badly the boy wanted this hot little body was turning him on far more than it should have.

"You gonna ask me to eat you out so you can jizz on my face again?"

"What do you want to do?" David asked. "I mean, I'm stuck this way until I get off. But while it may look like your sister, I'm not your sister. So if you have any super secret fantasies about your little sister, now is the time to try them out."

"Dad!" Jacob said in protest, but he was still staring at his sister's ass. "She's my sister."

"I don't think for a moment that you have ever touched your sister," he said. "But I know you've thought about her. I can see it in your eyes. I can tell by how you keep staring at this ass."

David leaned forward and shook it at his son, who actually let out a barely audible moan.

"Tell me your fantasies and I'll let you have your way with this body," David said, although he couldn't believe the words had just come out of his mouth. Had he really just propositioned his own son? This was wrong in so many ways.

"Sometimes I steal her freshly worn panties out of the hamper," Jacob said. "Leah's too...and sometimes mom's. "I sniff their pussy and ass while I jerk off. Then I put them back so nobody notices."

"So what do you think about when you're sniffing Rachel's panties and jerking off?"