All Mark could do was lie there. Any chance of sleep at a reasonable hour was long forgotten. At newly 18, he wasn’t blind to what his parents were doing. He’d long ago noticed women and their bodies, their sexy curvy bodies.
Just the sounds emanating from his parents room had his cock thickening and rising. The light coming through his window, illuminated the tent forming under his blanket.
He debated rolling over and cramming the pillow over his head, but he knew that his parents were just getting started and it would be a long, torturous night of raging hard-ons and not sleeping.
Reaching down, he firmly gripped his hard cock. It wasn’t the longest, but it was fat. At 7″ long and 4 inches thick, any woman would feel every vein, ridge and bump, from the base, all the way up to his fat circumcised cock head.
The tempo of the headboard banging against the wall and his mother’s moans were increasing in volume and frequency.
“Fuck, yes! Oh, Joe, fuck. I’m going to cum!”
Mark started stroking from the base of his cock to the head, matching his parents’ rhythm, wanting to badly cum in time with his mom. Unthinkingly, he imagined it was him fucking his mom, not his dad.
He stopped his feverish thrusts into his hand, expecting to be disgusted. Turned off. But his cock was still hard, throbbing and jerking back and forth in search for stimulation.
‘No one’s gonna know, Mark.’
Swearing softly under his breath, he grabbed his cock firmly and started stroking from base to tip.
This time, he imagined it was his 19 year old sister he was fucking. His cock jumped in his hand, the image of bending his big assed sister over and fucking her like dad was fucking mom almost made him blow his load.
“Hey Mark…” his sister Shelby said as she walked into his room, cut off by the sight of her not-so baby brother jacking his cock at a frenzied speed. “Uh… Nevermind,” she exclaimed as she turned to leave.
Mark, torn between wanting his sister to see him shoot his load, and decency urging him to cover his jerking cock, gave it one last hurried stroke before covering his throbbing cock with the blanket.
“Shit, Shell. I didn’t expect…” he trailed off. Nothing could really explain away what she’d just witnessed.
“No, no. I’m sorry, I should’ve waited. I, uh, couldn’t sleep with the pornstars going at it.”
Shelby stood in the doorway to Mark’s room, fidgeting. Her arm across her breasts, hand clasped at her elbow as she shuffled her feet.
“It’s alright, Shell. No harm, no foul.”
Completely the opposite of what his cock was thinking at the moment. His cock was still twitching under the blanket, beginning to ache.
Shelby just stood there, sending furtive glances at her baby brothers cock as it jerked and throbbed. Her nipples, drilled into the arm she had hastily crossed over her body in the hopes that Mark wouldn’t notice.
The siblings, attempting to break the awkward silence, were still being treated to the multi-orgasmic compilation that was their parents fucking. The moans and grunts were increasing in volume, and it wasn’t going to be much longer before their parents finished. Hopefully.
Debating on whether to turn and go back to her room and try to get some sleep, Shelby couldn’t ignore her pebbled nipples and the way the slight shifting of her arm across them sent little shockwaves of pleasure to her clit.
Her pussy was positively drooling. The sounds of her parents fucking and the sight of that massive dick Mark was failing to hide were causing errant thoughts to run through her head.
She badly wanted to cum on a fat cock, and as tempting as her brother’s looked, she didn’t want to jeopardize the relationship they had. They weren’t close, only a year apart, and they didn’t really have anything in common. They were just family.
They were complete opposites. She being a quiet nerd type, complete with glasses and long brown hair which was neatly braided. And him with lean muscles and a basketball player’s physique.
Shelby rushed from the door to sit by her brother’s side, her braid coming loose. “Oh shit! Mark, are you ok?”
All Mark could do was clutch at his groin. He’d never experienced such a severe case of blue balls.
At least, he hoped it was blue balls.
It ached to even think about cumming.
“Yeah, sorry Shell. You, uh, caught me just as I was fixing to finish and the sudden stop… It’s not a pleasant feeling.”
Shelby wasn’t a prude, she knew about orgasms and sex. But hearing someone mention it caused a deep red blush to stain her cheeks.
“Sorry, Mark. I didn’t think. I only came in to have some company while the pornstars went at it. Is there anything I can do to help?”
Trying to not stare at his beautiful sister’s hard nipples, he failed miserably. He reached out and lightly twisted her nipple. Surprised at the way her eyes seemed to glass over and the soft moan that escaped from her pouty lips.
None of which was helping his boner go away.
“I should go. Back to my room.” Shelby reluctantly stated.
Hurrying to leave before anything else happened, Shelby strode quickly from the room and across the hall to her own where she hastily closed the door before frantically tearing her clothes off.
Climbing on the bed. She grabbed her favorite vibrator, newly named Mark. Flipped it to the highest setting before quickly sliding it as deep as she could in to her soaking wet pussy.
“Oh, fuck me, yes! Oh, Mark!” Sliding the vibrator in and out, circling her clit before sliding it back in to her pussy. Wishing, aching, for it to be her brother’s cock filling her. Feeling the clench of her pussy and how wet she was.
Moaning with each thrust of the vibrator, wanting it to be her brother’s fingers twisting and flicking her hard, sensitive nipples.
Shelby rode her vibrator, imagining it was her brother doing all of those things.
“Oh, oh oh! Fuck me, oh Mark!” her pussy clutching on the vibrator buried as deep in her pussy as it would go.
As she was cumming, something warm and wet landed on her. Shelby’s eyes flashed open to her brother standing in her open doorway, his cock still shooting ropes of cum. Their eyes locked, and with some twist of fate a glob of his cum landed on her panting lips.