Amy’s hips twitched and jerked as her alien testicles trembled, dumping load after load of thick, glue-like, dense fluid wiggling with tiny dick slugs from deep within his ballsack and splattering onto her massive, platoon boat-shaped feet covered in hair and hidden from Amy's view between thick, hairy, muscular thighs and pecs. The room would smell like nothing but her new musky male body and testicles for months to come, Amy’s climaxing cock staining the walls as her length flexed and clenched, emptying her testicles into a pile before her. So thick, so heavy, so dense were her loads of gay alien himbo goo that they grew into a cone, packed atop the previous emission, turning into a pile of dense, chunky, sticky ballsack juice with little garden slug-sized dick slugs identical to what infected her earlier wiggling around inside the goo.
“Mnngh~!” Squeezing the base of her cock, Amy slowly slid her hand upwards, her shaft bulging as she forced out the last of her climax with her bare hand. A massive, near solid load of nutsack sludge oozed from her cockhead loaded with slightly larger but identical dick slug sons freshly churned by her new alien testicles. Thanks to her new gay alien himbo balls she birthed more sons in one load than she could ever have children as a human woman, but that took too much from the new himbo as she tumbles and falls asleep on the floor in the puddle of her own thick, manly fluids, her new tiny alien dick slug sons wiggling around in her cum absorbing its nutrients before entering the next stage in their lifecycle to seek new hosts and spread Daddy's genes. There she dreams, her brain influenced by the dick slug having taken her host earlier now sending wild signals through her central nervous system and the alien androgen cocktail pumped by her gay himbo balls that had invaded her brain.
Her prefrontal cortex and brain volume grew along with her skull and nose to finish off the transformation as the freshly minted himbo dozed away. An ancient red dwarf star older than our own with a desert-like planet orbiting it tidal locked to it becomes a rogue planet and slingshots from its orbit as the dwarf galaxy to which its star orbited spills into our galaxy billions of years ago; hardy, ancient, adapted lifeforms resort to parasitizing the genitals of their host and symbiotically making them into...better more male beings.
Countless worlds conquered by the dick slug and entire populaces brought to the epitome of male perfection to spread more of the dick slug's kind flashed before her eyes; as the infection reached critical mass on many prior worlds like this one the infected gradually grew to gargantuan sizes; dick-shaped mushrooms replaced plants and spewed cum to pollinate their kind by sticking to the gargantuan himbos that had become of those past civilizations' members; dick slugs slithered across the floor infecting and masculinizing what life remained not yet suffocated by the man musk that had replaced the atmosphere, and cum gradually replacing bodies of water in her dream as it finally dawned to Amy of the new gay himbo ecosystem that HE now carried in HIS testicles.
Daddy smirked in his sleep knowing what he had become as the dick slugs, with most now measuring at 7 inches in length with a few up to up to 12 inches, slowly began migrating out of their shrunken gooey birthing fluid in all directions and into vents, drain pipes, and underneath doorways leaving him alone in a puddle of what remained of his thick product. The woman known as Amy was gone, vanished from the Earth, and in her wake was Daddy. And wherever he’d go, he’d be sure to leave a trail of sweaty testicle stench and noxious ballsack goo crawling with hundreds of dick slug sons eager to infect new hosts and make more Daddies like him in each load.