But as he watched her smooth the dark nylons on her thighs he knew that tonight was going to be one of the all-out orgies and his swollen prick jerked and quivered in anticipation.

"What's wrong, Betty? Do you hear Grandma coming up?"

Betty realized that she'd just been standing there looking at her brother and his delicious prick. They had gone to the room she slept in, turned the light on, and had both gotten undressed. Later he'd take his clothes to the other bedroom – and she'd already put a couple of towels on the mattress. She'd rinse them out before going to sleep and by the next morning it'd look as if they'd just been used after a bath or a shower.

"I guess I just imagined that I heard her," Betty lied, walking forward and dropping to her knees before him. She caressed his delightful dick with one hand and cupped his balls with the other. "We don't have to be in a hurry, do we? I'm not sleepy, and…"

"Take all the time you want," Rod said. Shortly after Betty's words trailed off he let out a little gasp as she licked the blunt end of his rigid shaft. "Suck it for a couple of minutes if you want to. I'll be able to last and then after I fuck you in both holes I'll give you another load if you want."

Betty looked up and met his eyes. "Have you had any trouble fighting the girls away from this lovely joystick, Rod?"

"I've had my share of flirty glances," Rod said, grinning. "Not that they saw what you're blowing, of course."

"Would you like for another girl to hold it like this?" Betty asked. "I don't mean the swapping wives – or Mom. I…"

"You could've left that last bit off," Rod cut in.

"Why? You know damned well that you think about having sex with Mom when you see her being banged and lapped by one of the other men. Just as I try and imagine how it'd be to be fucked or sucked by Dad. We've always been honest with each other, honey, so why stop now?"