The Griswolds are a typical all-American family.
Clark Griswold is a brilliant biochemist employed by a multinational food processing company and his lovely wife Ellen is a devoted wife and caring mother of nineteen-year old Audrey and eighteen-year old Rusty.
The Griswolds lived a happy life in their suburban New Jersey home.
Clark idolized his family and whatever he did was to make them happy.
Then entered the "Incest Cupid".
The Incest Cupid is a naughty little cherub whose arrows cause their targets impure thoughts. Once stricken by the Incest Cupid family members begin looking very tempting to each other.
Audrey walked through the kitchen clad only in her panties and bra like she had many time before. This morning Clark's eyes locked on the mound of pubic hair pressing out under the smooth silk of her skimpy bikinis. Clark noticed how his daughter's hips had flared following puberty. Suddenly he became aware he had an erection.
Ellen had just stepped out of the shower and carelessly not closed the bathroom door tight. Rusty was just walking past and happened to glance in and see his naked mom. For a woman in her early forties Ellen Griswold still looked good.
Her 36C breasts were still firm after nursing two children and her stomach only had a bit of a paunch. Her crotch was covered with a thatch of curly fair pubic hair. Rusty was immediately aroused.
Clark was drawn down the hall behind Audrey as if by a magnet.
"Dad?" Audrey said seeing her father entering her bedroom.
"I just thought you looked particularly beautiful this morning." Clark replied.
Spontaneously Audrey did something unexplained, she removed her bra so her father could se her bare breasts.
Rusty was mesmerized watching his mother toweling off. Ellen happened to look up and saw he son watching through the partially open door. Instead of modestly hiding her nudity she greeted her son.
"Want to do my back?" she asked Rusty.
Rusty entered the bathroom and closed the door.
"Do you like them Dad?" Audrey teased.
Clark could not take his eyes off his daughter's perky young tits. Her nipples were small cinnamon buttons on her pale white mounds.
Clark watched closely as her thumbs hooked under the elastic waistband of her panties.
Audrey's panties no longer veiled her father's view; Clark stared at her clump of dark tangled curls.
Ellen could not believe what she was doing. She was naked in the bathroom with her son helping him remove his clothing.
She pulled down his boxers allowing his erection to spring out in her face. She dropped to her knees.
Rusty's cock felt so natural in her mouth. It had been years since she had sucked a cock.