Sex Slugs: Slither into my heart

Story by ShinyLove on SoFurry

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#1 of Sex Slugs


Family Tree :

David - Mid/Late 40's: Father(Riley/Madison), Ex-Husband(Kathy), Husband(Michael) - (Bi-sexual)

Michael - Early 40's: Step Father(Riley/Madison), Husband(David) - (Gay)


Kathy - Early 40's, Mother(Riley/Madison), Ex-Wife(David), Wife(Jacob) - (Straight)

Jacob - Late 30's, Step Father(Riley/Madison), Husband(Kathy) - (Straight)


Riley - 20, Daughter(David/Kathy), (Straight)

Madison - 18, Daughter(David/Kathy), Non-Binary/Trans-Women - (Pansexual)


Madison gurgled, her eyes wide open in complete panic as she screamed into Michael's asshole that was planted on her mouth. She was trying to escape, trying so desperately to move her body out of the grasp of David, her biological father. David rested on Madison's body, his arms pinning down hers as her legs flailed in pointless resistance.

"Mfmmm, fuckkkkk", Michael groaned as his body shook on top of Madison's face, his neon blue swollen cock unloading a thick stream of similarly colored cum over Madison's stomach and David's chest and face. The alien slug, slick in its naturally produced lube that coat's its skin in shiny neon green slime, wiggled and slithered out of Michael's similarly coated asshole as it slid halfway into Madison's mouth. Closing her eyes in horror, she clenched her face and mouth as tight as possible, her teeth closed in her mouth trying to deny... what ever the fuck this thing is, an entrance into her mouth.

Michael's orgasm as the slug started to escape his ass, it too brought the slug to start shooting bright blue neon juices into the entrance of Madison's mouth. It had broke the gap between her lips but was blocked by her teeth. The half exposed slug wiggled around inside Madison's mouth, exploring to find an opening as it pulse and contracted back and forth, shooting Madison's mouth as it coated her insides. Madison could feel it, it could feel this slick warmth coat her teeth and gums, she could feel it slither around her gums and lips as it painted her mouth with its slick alien juices.

She clenched harder, but suddenly her mouth wasn't responding the way it was just a few seconds ago. The fluids the slug was spraying into her mouth acted as a muscle relaxant, the tension in her lips started to subside, allowing the slug to slither in just a bit more from Michael's asshole. The slug found a small gap in the clenched teeth, sliding a small part of its tip into the gap, it started to pulse and contract bit by bit, sliding into the gap as her muscles no longer responded and relaxed completely. Her eyes now wide open as she tried to scream with a mouth full of alien juice and slug.

Finally, with a loud moan of pleasure from Michael, he felt the love slug completely slide out of her hole and slither into Madison's mouth, as it quickly squirmed down her throat and began pumping endless juices into her body as her eyes once wide open and screaming were now flickering rapidly as they rolled to the back of her head, the slug seen bulging in her throat a it slide itself down into her stomach.


30 Minutes Earlier


David was already in bed sleeping when Michael and Madison came home from their camping trip. It was nearly midnight when the two got back, hours of unexpected traffic due to some type of chemical spill, or at least that's what he heard on the radio in bumper to bumper traffic. They were both spent and pretty filthy after three days of being on the trail with no real shower to speak of. They both said their goodnights as they finished unpacking their gear, Madison took the downstairs shower as Michael dropped his equipment in the bedroom and stripped down and went into the master bath.

A few minutes passed by as the Michael's shower started to steam up the the bathroom, his hiking gear right next to the door, bags filled with used cans, bottles, and some bags filled with some funky looking minerals that Madison decided to keep for her collection, but had forgot to get back from her step-dads pack.

As Michael showered, one of the larger rocks, coated in a bright purple shell, started to crack. Silently, the shell broke as a shimmering slug like creature wormed its way out of the protective cocoon. Around five inches long in length and six or seven in girth, bright neon green and almost glittery in its appearance when the light from the doorway hit its body. It instantly sensed the heat and humidity coming from the bathroom, making it start slithering along the hardwood floor and into the bathroom.

Michael was less cleaning and more simply enjoying having a hot cleansing shower for the first time in what felt like ages. Rubbing in the nice soap, and just standing over the heat, he closed his eyes and started relaxing in a way he hasn't been in years, or ever. He felt like his muscles were relaxing completely, tension in his body was fading as an aura of peace was radiating from his body. He followed his instincts and instead of fighting his legs, he turned around and let the shower wash over him as he laid in the bath tub, mind in a haze as his body felt like it was glowing.

That's when he turned his head and saw the slug on the edge of the shower, both ends arched up into the air as a clear mist was being released from the small open holes in the tips of the slug. Normally, this would have had Michael jump out of the shower and smash it with a club, he had never seen a worm or slug like this before. But for some reason, he felt no such reaction, he simply looked at it as his body laid still, his arms slowly rubbing the hot fresh water over his smooth chest as he enjoyed his own touch.

The slug slithered silently into the tub, its constant release of bright fluid from its pours getting washes away into the drain as it found the side of Michael's leg and started slithering up his shin, leaving a bright neon trail of slime. Micheal didn't panic, in fact, he didn't do anything but watch in amazement at the creature work it's way up his knee, to his thigh, and then to his crotch.

The slugs front end was wiggling around Michael's crotch, almost like it was searching for something. Rubbing against the inner leg, his balls, his taint, until it tapped the middle of his cock, making him twitch in a tickling sensation as his rod started to swell just a little. The moment the slug's front end tapped the cock, it started exploring it until it found the top, where the slug opened its front end and began to completely envelop Michael's cock.

When Michael felt the slug slither over the top of his cock, he moaned softly. The smooth interior of the slug coated his cock in warmth as he felt it slide more and more over his ever hardening rod. Within a few seconds he was the hardest he has ever been, the cock standing at nearly 60 degrees, the weight of the slug dragging it down as it continued to slither over the seven inch human reproductive organ. Eventually, it found its way to the base, the slug visibly stretched from its usual form factor, but clearly designed to be elastic and flexible.

The cock was completely engulfed, the slug continuing to work it's way till it attached itself at the base of his cock and crotch, making the consumed cock stand completely straight as the slug tightened itself in contractions, feeling like an asshole contracting from orgasmic spasms. Michael groaned and moaned as the slug was working his cock, his balls starting to harden as he felt cum start spraying into the slugs body as he started breathing heavy and soft, cumming into the slug. The moment he started shooting cum, the slug opened its back end, where the head of Michael's cock was, and started melting its body inside out, the slimy neon juices of its body sliding down his urethra. Michael watched the slug melt into him as his orgasm was growing stronger, even as the last bit of cum was already released. He saw the slug slide down into his cock like a black hole swallowing a star, watching his cock pulse as he felt the insane warmth fill his cock and start radiating in his balls, making his head spin from the overwhelming sensation coming from his cock and balls.

When the slug was halfway melted, it broke itself in half, the last bit of neon fluid sliding into the cock as it started to swell larger and leak some type of neon blue juices were leaking out like pre-cum. The bottom half of the slug, connected to the base of his cock, started to expand back over his now 9 inch pulsing rod, sliding backwards as it reformed into a smaller version of itself, sliding up until it was only attached to the head, it's bottom half free as Michael felt the sensation of a little blowjob from the slug feeding off his pre-cum.

Michael instantly felt the need to rub his new bright blue neon tinted cock, which was growing more neon blue by the second. He took his hands and started to stroke off his pulsing 11 inch rod as he felt the sensation of cumming instantly hit him, spraying thick strings of cum into the slug as it started to get its fill. More and more he pumped his cock like a mindless drone, his thoughts only occupied with his bodies pleasure, not at all with the horrors happening to his body. His balls started swelling as well, as he felt little slithering creatures inside of them, tiny alien baby slugs no bigger than a centimeter or two slithering around his balls and taint.

The more he pumped, the bigger the slug grew, growing back to it's original size as it expanded over Michael's hand that was still working his needy cock, consuming stream after stream of thick cum till it was triple in size from it's original form, Thick and heavy it started sliding back down the cock to support it's new length and girth as Michael simply started rubbing his cock over the alien slugs body, watching and feeling the back end start expanding and slithering freely down his cock, his balls, over his taint till it found his needy asshole.

The slug, now expanding from his cock to his asshole, explored his hole with its back end and started to explore the inside of his slut hole, shooting bright blue neon fluids into him like a primer as his body shook from the entrance of the creature. With the front end attached to the cock and the back end inside his ass, he saw the slug start pulsing near its center mass, as he noticed little movements flow down the slug in vibration, till he felt it slide into him. Smaller alien slugs were now slithering into his ass, exploring every section as they secreted the same neon fluid, coating every single bit of his insides as they infected and corrupted him. Filling his ass with baby slugs, the original creature slid out of his ass, which caused him to cum a thick load of nearly a liter of pure bright blue cum all into the slug, which it started to spray out of its back side all over the tub.

Quickly, the slug detached from his cock as it retracted to seven inches in length, Michael saw his now 13 inch bright blue neon rod, perfectly stiff as he continued to work it and cum all over his chest, his crotch, his face, the smell of his new cum driving himself crazy as he watched the slug rapidly slither over his chest and lunge into his mouth.

He didn't resist, he didn't fight, his mouth opened and accepted the blessing as it slithered down his throat, his body spasming in complete orgasm. His cock spraying endless thick cum into the tub as his ass started pulsing and spraying the same thick blue fluid in agreement. His throat bulged as his mind went completely blank, his body shaking as the slug unleashed its final chemical cocktail into his bloodstream as it went to work completing the process of turning Michael into a perfect being.