One of Christy's windows faced out onto the yard. Jane knew that her daughter never closed the window shade because of a clump of shrubbery that grew outside on the other side of the glass.
Jane scurried down the hall, through the kitchen, and bolted through the back door into the yard. She burrowed into the shrubbery, coming up with a perfect view through her daughter's uncovered window. Whatever there was to be seen, she could see it.
"Oh, my God!" Jane gasped with alarm, forced to bite into her forearm so her voice wouldn't carry.
Now Jane knew why her daughter was naked. Why Christy had been laughing and moaning. The scene was crystal clear. Christy was not, alone in bed. Between her spread legs, she clutched the head of a crouching boy. A teenage boy who was eating her cunt.
A boy who was her own brother.
And all Jane could do was watch and listen as her son went down on her daughter's pussy.
"Ooooh, Bud, suck it, suck it!" Christy was groaning encouragement to her twat-lapping brother. "Use your tongue like it was a cock. Make it hard and jam it up my cunt. Like you were fucking me with it."
In her hiding place, Jane had trouble believing her own eyes and ears. She was hypnotized by the incestuous action on the bed, rooted to her spot outside the window.
"My own son and daughter," Jane whispered with awe. "Bud and Christy, having sex…"
Jane was interrupted by her daughter's orgasmic wail.
"Oh, Bud… Bud, I'm coming!" Christ blurted, "You've got me coming so hard! Your tongue is magic in my cunt!"
Jane could hear her son slurp as Bud downed his sister's free-flowing pussy juice while Christy came in his mouth. Jane licked her lips, finding herself wondering what her daughter's cunt tasted like.
Jane was shocked by the knowledge that her son and daughter were lovers. But her dominant emotion was sexual. Most of all, watching her naked children getting it on had reduced Jane to panting horniness.
"What beautiful kids," she sighed. "I'd give anything to watch them fuck."
Jane got her wish.
Bud pulled his face up from his sister's crotch. His sticky face glistened with pussy juice as he knelt between Christy's legs. His big dick resembled a pole as it loomed from his crotch.
"Why'd you stop eating my cunt?" Christy asked.
"You know," Bud answered, stroking his hard-on and eyeing his sister's wide-open twat.
"Why don't you tell me anyway?" Christy teased. "I want to hear you say it."
"I'm going… to… fuck… you," Bud slowly told his sister.
"Say it again," Christy urged. "Over and over again."
"I'm going to fuck you, Sis. Fuck you, fuck you, fuck you!"
Then he guided his cock-head to the fleshy gash of his sister's awaiting cunt. He shoved. Half of his prick disappeared in Christy's twat. He shoved again, fell on top of his sister, and as his hips started to roll, he was fucking her to the hilt.
"God, just look at those kids fuck," Jane swooned outside the window. "What I'd give to be that age again. So young and horny and knowing exactly what to do about it."
Jane could not stand to just watch any longer. She needed relief from the throbbing ache at the crux of her loins. So her hand found its way under her skirt, straight to her cunt.
Tugging her damp panties aside, Jane poked a pair of fingers into her sopping gash. As she probed, her pussy squeezed back. She curled her fingers, using her knuckles like the head of a cock. Rhythmically finger-fucking herself, she continued to watch her children fuck.
"Mmmm, your cock feels so big in my cunt," Christy was telling her brother as he drove between her spread legs. "I'm gonna be coming before I know it."
"Go ahead. Don't hold anything back, Sis," Bud rasped. "You know how I dig fucking you while your pussy's getting off. Your cunt gets even tighter and wetter while you're coming than it usually is."
"In that case I'll give myself a little extra push," Christy chuckled.
She laid a hand across each of her tits. She rubbed the jiggling mounds at first, then gradually began to concentrate on her nipples. Christy's nipples were plump and red, resembling fresh strawberries. She caught them between her fingers and squeezed them, gently at first, then harder. Eventually she was pinching them. They swelled like they might burst.
"Now… now I'm gonna come!" Christy announced.
She climaxed, her body writhing. Wrapping her legs around her brother's waist while he pumped his cock in her cunt, she bounced her ass on the bed. The springs squealed, combining with Christy's moans to produce a duet of erotic sound that seared Jane's ears.
As her daughter climaxed, Jane knew that she had to come also in order to keep envy from consuming her. Desperate for an orgasm, Jane stuffed all five fingers into her twat. Her fist punched repeatedly all the way to her womb.
It worked.
"Ooooh, thank God!" Jane moaned gratefully as she achieved the climax she had craved.
Temporarily calmed down, she focused her attention on her son. Bud was obviously ready to come.
"Getting off, Sis!" he told Christy, shafting his dick in her twat. "My cock's gonna blow in your pussy!"
"Shoot it, Bud, shoot it!" Christy cried, wiggling her ass in anticipation. "Drown my cunt with your cum! Fill me up with so much damn jizm that my pussy can't hold it all! I want your cum running down my legs and leaking into the crack of my ass by the time your prick's through unloading!"
"Yes, Bud, shoot it," Jane whispered. "Come in Christy's cunt. Give your sister the hot juice from your big, beautiful cock."
Bud grunted. His smooth asscheeks clenched together as his boner slammed into his sister's fuck-hole as far as possible. Then he came.
"Pour it inside me!" Christy screeched.
"Oh, yes… yes," Jane murmured at the window while she watched her son creaming in her daughter's thirsty twat. "Pump that cum into Christy's pussy, Bud. She deserves every drop you can give her. She's fucked you so hard for it."
"Shit, I'm coming so strong… don't know where I'm getting all this jizz!" Bud gasped while his cock continued erupting in his sister's cunt.
"Ahhhh, this is the best, Bud," Christy responded. "The best time you've ever fucked me. There's soooo much cummmmmmm!"
At the window, Jane was suddenly distracted from the main action when the significance of what her daughter had just said struck her.
"The best time you ever fucked me," Jane repeated Christy's key statement to herself.
Jane was shaken. For the first time it dawned on her that her children had fucked before tonight. What she was watching was something Bud and Christy had been doing all along.
In the meantime, while Jane pondered her discovery, Bud finished shooting his wad and removed his spent prick from his sister's cunt. Christy lolled with her legs gaping, fingering her pussy lips as far apart as they would go so Bud's excess jism spilled out of her gash. Caught by the light, the leaking cum sparkled as it streaked down Christy's loins and saturated the split of her ass.
Now Jane was in for another shock as she heard her son say to her daughter: "Why don't you smear my jizz around, Sis? That's what Mom always does when I'm through fucking her."
Christy's pretty face wrinkled with distaste at the mention of her mother. "Don't bring her up. Not when you're balling me!"
"Aw, c'mon, Sis, don't be so bitchy. Mom means well."
"I can't help the way I feel!" Christy snapped at her brother. "The idea of you fucking Mom turns my stomach. I'll never understand how you can stand to stick your cock in that dried-up old cunt of hers. I'll bet her pussy is so loose it flaps."
Outside the window, Jane was heartsick. But she kept listening. Her spirits picked up when she heard Bud defending her.
"You can badmouth Mom all you want, Sis, and it doesn't mean a thing," he answered Christy.
"You don't know what you're talking about, because you don't have a cock and you've never fucked her."