Marina drifted through her post-orgasm afterglow, the feel of the sun on her body and a gentle breeze making her feel alive. God, it had been so hot to watch her manly son and her darling daughter in the grip of hot incest, the sight of his rock-hard manhood plunging between her daughter's pink folds was exquisite.
As she thought about it, she realized that she couldn't continue to pretend to go to work after phoning in sick. She hoped that Joe and Larissa would be wound up at night, and want to have a hot late-night fuck after everyone in the house had gone to bed. Maybe she would be lucky enough to watch them fucking late at night.
After a while, she checked her watch, now she could go home, and she would be right on her usual arrival time.
******
She slept very lightly, hoping to hear the sounds of hot fucking in the night. Although she couldn't stay awake all night, she felt that they were not taking the chance to get it going while their parents were in the house. She waited for an opportunity, and on the Sunday, she had it.
Her husband Rich was heading out to the golf course with 3 of his work associates. Marina was able to easily concoct a story about meeting some female friends.
In the kitchen, during Sunday brunch, she casually remarked, "I'm going to meet up with Laney, Tina, and Betty, and we'll have a good old-fashioned gab fest. Once they get going, I'll be out for probably most of the afternoon."
She took a look at Joe and Larissa, she felt that the look the siblings shared was the let's get it on signal.
Just after Noon, Rich picked up his golf bag and headed out. Marina waited for about 20 minutes, then saying her goodbyes to Joe and Larissa, she got in her car, drove two blocks away, and hurried back. Cautiously easing open the front door, she crept up the stairs.
From Larissa's bedroom, she heard Larissa purr, "Oh lover, I've been aching for your cock!"
Joe's voice answered back, "I've had a hard-on all day, waiting to give you a long, hard ride!"
Larissa purred, "Let me suck you first, I love to feel your cock gliding in and out of my mouth."
Marina could feel her panties damp with anticipation, she hurried into her bedroom, wriggled out of her dress and panties, grabbed a towel from the laundry hamper, and was quickly outside their door. It was slightly ajar, and she peered in.