The soft sucking sounds from Sarah and Karen mixed with the ecstatic groans of Jimmy. His cock throbbed inside his aunt's mouth, and his balls writhed as his mother sucked wantonly on them. The grip they each had on his, naked ass made him shiver.
"Ohhhh, suck my cock, Aunt Karen!" he gasped as his aunt sucked upward hard and wetly. "Mom, my balls are on fire! Suck my cock and suck my balls, both of you!"
Karen mewled as her lips pulled off his cock. "I'll suck your hard cock, Jimmy!" she breathed excitedly, staring at her sister with her mouth full of his balls. "Give me a nice hot mouthful of juice, Jimmy!"
She rammed down onto his cock again, sucking in a frenzy this time, anxious to have him explode, discharge the thick sweetness from his balls into her mouth. Now Sarah slipped her mouth from his balls, gazing with fiery eyes at her sister gobbling his cock so hungrily.
"Squirt it down her cock-sucking throat, baby!" she cried out. "Give her what she wants… come in her fucking mouth!"
"I will!" Jimmy grunted. "Hurry, Mom, suck my balls again!"
With a moan of hunger, Sarah pulled her son's balls back into her mouth, feeling them writhe as she sucked. Karen was dancing her lovely face up and down swiftly on his cock, her mouth stretched, eyes glassy.
"Now," Jimmy yelped. "Ohhh, shit, now!" The eruption of his cock made his aunt choke daintily, but Karen sucked harder yet, his thick, hot juices spraying across her tongue. Her mouth filled and she swallowed his come-juice desperately, but plenty of it seeped past her gripping lips, running down the shaft and to his mother's lips around his balls. Jimmy's body trembled stiffly as he came, his balls tight inside his mother's mouth.
When his come-juice ran down onto her lip, Sarah turned his balls loose, and darted her tongue out, lapping the juices up from the shaft of his cock, the tip licking about the sucking mouth of her sister. Both of them licked and slicked at his juices, moaning in pleasure. A soft, muffled, wet squeal came from Karen as her cunt spasmed about Sarah's buried fingers, her orgasm intense as she gulped the sweet come-juice from her nephews cock.
Later, sitting on the couch, close to Jimmy, Karen fondled him while Sarah was in the kitchen preparing iced tea for them. Karen had one nyloned thigh draped over Jimmy's leg, the other flung wide. Her bushy cunt, glistening with pussy-juices, was widely revealed. Jimmy had his arm over the back of his aunt's shoulders, playing with a shapely, firm tit.
As Sarah came back into the room, the ice and tea on a tray, the front door opened and in stepped Keith.
For the second time that day, Karen scrambled to cover herself, looking warily at her son in the doorway.
Sarah placed the tray on the coffee table, watching her sister blush and try to cover her naked body, smiling with amusement. Jimmy remained as he had been.
It was some time before Karen realized that Sarah wasn't trying to hide her nakedness, and that Jimmy was sitting there as before. With her arms over her shapely tits, her legs closed tightly, leaning forward, she looked at Sarah, then Jimmy, and finally at her son. Sarah was standing near the coffee table, beautifully naked, a big smile on her lovely face.
"I think I see," Karen said softly, slowly, her eyes going from her son to sister to nephew, then back to her son.
"Oh, I'm sure you do, Karen," Sarah said, eyes flashing with pleasure. "But not anything so exciting as what we just did with my son."
"Don't say anything!" Karen said quickly. "Keith can't know…"
"He already knows," Sarah said, leaning over to pick up a glass of tea, her beautiful tits wobbling slightly. "At least about me and Jimmy."
Karen gazed at her sister for a moment, then said, "I have a hunch he's involved, too."
"Of course," Sarah said, sipping her tea. "Why not?"
Keith was grinning, trying to see his mother's tits around her protective arms. He could see the soft curls of her cunt between her thighs. His cock was already swelling and pressing against his pants.
After a tense moment, Karen said, her voice barely audible, "I guess I'm about to be blackmailed again, huh?"
"Blackmailed?" Keith asked.
Not as embarrassed now, Karen told her son. "I was enjoying a visit with my sister when she blackmailed me into… you know," she nodded at Jimmy. "I didn't have much choice."
"I can't have your father finding out about this."
Sarah laughed.
"What your mother isn't saying is Jimmy caught her with her face between my legs, licking my cunt, Keith."
"Sarah!" Karen gasped. "You didn't have to tell him that!"
Keith's cock looked as if it was going to burst through the seams of his pants. Karen gazed at it, as if mesmerized. Keith boldly rubbed his cock through his pants and Karen ran her tongue over her lips, breathing fast.
"Karen, Keith is fucking me, too," Sarah said. "He has a fantastic cock, you know. It's okay that he knows you suck my cunt."
"But it isn't," Karen said, still gazing at her son's bulging cock. "He'll tell his father…"
"Not me, Mom," Keith grinned, still trying to see his mother's tits.
"There, you see," Sarah said. "Keith won't say anything, I won't say anything, and Jimmy won't say anything."
"But…"
Karen turned her eyes to her sister.
"I know," she said. "Everyone will keep it a nice little secret, but I have to fuck my son, too, isn't that right?"
"You'll love it, Karen," Sarah grinned.
Karen turned to her son again, his cock drawing her eyes. She began to breathe deeply as her son opened his pants, and his long, thick cock pushed out. A little whimper came from Karen and her cunt lurched hotly between her thighs. Her arm came down from her tits, her hands resting on her nyloned thighs. She stared fixedly as her son opened the belt of his pants ad pushed them down. He was looking at his mother's tits now, seeing them naked for the first time.
"Keith, please…" Karen moaned. "I'm your mother."
"I know," he said, coming toward her, his cock waving with hardness. He wore only his t-shirt now. "And I want to fuck you, Mom."
He stopped before his mother, and Karen's eyes steamed on the swollen head of her son's cock. His piss-hole flared, dripping. Sarah sat on the opposite side of Jimmy, both of them waiting to see what Karen would do. Sarah fondled her son's cock and balls as they watched and waited.
"Keith…" Karen whispered, her hand lifting to cup her son's balls. She closed her hand about his balls, squeezing them, making his hard cock jerk upward, then down. "My God, Keith you're my son, and I can't do it."
With a deep throaty moan, Karen closed her lips about her son's cock, sucking it deeply. She let out soft sobs, squeezing his balls hard as her lips raced up and down his throbbing hard-on, eyes closed.
"Suck it, Karen!" Sarah giggled lewdly. "Suck it good!"
"Mmmmm!" Karen slipped her lips from the swollen head, then down swiftly, mashing them into the wiry hair at the base of her son's cock, only to suck up strongly, then down again.
Keith trembled, looking down at his mother's head bobbing so swiftly, her mouth hot and tight and wet. He placed his hands on her shoulders, pushing his cock to her mouth. With a wet sob, Karen released her son's balls and wrapped her arms around his waist, clutching his naked ass and trying to swallow his cock into her throat.
After sucking her son's cock a few more minutes, Karen pulled off, looking up at his face with fiery, glazed eyes. "Keith, put it in me! I want it inside me, Keith!"
She leaned back, spreading her long, nyloned thighs wide, then pulled her knees to her tits, offering her hairy cunt to his jerking cock.
"You were doing great sucking my cock, Mom," Keith said.