Story Description: Incestuous stepsiblings become enmeshed in their parent's odd swinger lifestyle.
***
Jerking Off to Mom
Ramon tossed to his side and pressed an ear to the mattress. Blanketing a pillow over the other, he gritted his teeth and groaned.
Reverberant sounds blast from the ceiling vent like a megaphone.
Hearing his stepfather grunt as another man's wife sucked him along with the vociferous noise of his mom slobbering on another man's dick, he surrendered.
Throwing the pillow to the end of the bed, he grumbled, "You promised."
He heard his mom sensually moaning, "Ummm," as she salivated on a prick.
"Damn it," he growled and rose from the bed.
Shuffling to the edge to plant his feet on the floor, he stood and adjusted the hardon tenting his boxers.
"This has to stop," he mumbled while exiting his bedroom.
Dropping the waistband of his shorts and wedging it under his balls, he grasped his shank and strolled down the hall.
Peeking into the living room to observe his parents engaging in a tryst with an attractive couple, he narrowed his gaze and arrowed it at his mom's bobbing head.
He stroked his cock to match her bouncing rhythm.
"Yuck, you're jerking to your mom," a feminine voice said from a distance behind him.
Startled by that accusation, he fumbled to stuff his erection back into his shorts.
Scrambling back from the hallway entrance, he turned to confront his stepsister. He rasped out a whisper, "Marisa, what the fuck? You're supposed to be sleeping."
Holding her response, she pounced past him to peer into the living room.
Hastily turning back to face her stepbrother, she threw a hand to her mouth to stifle a giggle and briskly walked back to him.
Standing an arm-length away, she unwarily gawked the arching bridge pressing against the material of his boxers.
Ramon quickly turned his back to her and mumbled, "Damn it, go back to bed."
Amused by his comical composure, she quietly replied, "Who can sleep with that going on. Dad needs to fix those air vents. They broke their promise not to swing at home."
"Obviously," he said.
Marisa placed a hand on his shoulder. "It's awkward talking to your back. I'm not going to tease you, turn around. Does she know?"
Placing both hands down to hide his erection, he turned to face her and replied, "Who? Know what?"
Cocking her head while impishly beaming, she said, "Don't be sheepish. That's also obvious. This isn't the first time I caught you lurking."
"You've been spying on me?" he retorted.
"Yes, from behind. I was being polite to avoid embarrassing you."
"And what's changed?"
"My curiosity."
"About what?"
"I've never actually watched a guy do it in front of me."
"You can't be serious. You want to stare at me while I jerk it?"
Observing his glare and the odd tilt of his head, Marisa exclaimed, "Each time I saw you, I was tempted to peek. Oddly, I'm now obsessed with the idea."
Astonished by her confession, Ramon glared at her in stunned silence. The faint cry of his mother bantering out, "My pussy's so wet," hardened his dick and made it twitch.
Marisa gazed at his discomfort and smiled. She then said, "There's nothing to be ashamed about. You're not weird, you're just a man. I can tell you're dying to touch it and I'm not going anywhere."
He replied, "The idea of choking it in front of you is awkward and frankly, that's what's bizarre."
"I'm not going to laugh, and I won't tell anyone."
The flat line of Ramon's lips suddenly upturned into a broad grin.
Unnerved by the change of his demeanor, she stuttered, "WโWhโWhy are you looking at me that way?"
Ramon teased, "If I show you mine, give me a peek at yours. That seems fair."
Marisa quickly cut-off an abrupt burst of laughter by throwing a hand over her mouth. Her amused eyes glare at him. Dropping her hand, she replied, "You can't be serious. We're both 23-year old adults and that sounded juvenile. You want me to masturbate with you? Yeah, it sounds funny when you say it."
He then winked and replied, "Coming from a sister that's obsessed with watching her brother play with himself."
The statement made her feel pervy. Ashamed, she turned her gaze to the floor and said, "I'm sorry. Hearing them have sex, well, I'm not much different from you. I should go back to my room."
No longer uncomfortable at the prospect of displaying himself, he removed his hands from his tented boxers and bridged one arm to her shoulder. He said, "You can watch. You don't have to do anything. Yes, I jerk off to my mom. Watching her behave like a whore arouses me. I can't help it. We all have quirks and fetishes."
Marisa heard her father grunting along with sounds of sex. The urge to touch herself motived her to say, "I'll do it, but we keep our mouths shut. Okay?"
Ramon nodded and gave her a pleasant smile and then replied, "Agreed. No big deal. We do the deed and then go to bed."
He dropped the hem of his boxers down to his thighs.
Marisa panted the instant his tubular shank bounced into view.
Palming the shaft of his dick, he whispered, "Ahโyou can show me yours now."
Marisa meekly nodded her head while her analytical eyes gawked the bulbous purple knob of her stepbrother's penis. Going through the motions with her thoughts in the gutter, she hastily slipped her pajama pants and panties down to her ankles and stepped out of them.
Bemused by her action, he said, "You're taking your bottom off?"
Stealthily slurping drool back into her open mouth, she abruptly closed it and shifted her gaze to his face. She then replied, "Ah, yeah, well, it's constricting, and I want to open my legs. I can't pop a dick out like you. You wanted a peek, so I'm complying. Since I removed my bottom, take off yours."
Mischievously beaming, he said, "If we're going that far, might as well get naked."
Literally tingling at the notion of that outrageous idea, she unwisely teased the fleshy hood covering her clit without conscious thought her action. Her mouth immediately crimped to muffle an impetuous moan. Wide-eyed, she looked at her brother to see if he noticed.
Feeling a trickle of moisture beading along her slit, she quickly pressed her thighs and clasped the bottom edge of her blouse and thrust the front downward.
"What are you doing?" Ramon said.
She glared at him.
He raised an eyebrow.
She finally replied, "I'll only take my top off on one condition. No ogling my boobs, I'm your sister."