Couple Therapy
That cock, pink and hard, those testicles held tightly in that cream-colored scrotum.
A woman and her pokemon
Samara watches as shinya closes her eyes and the slit between her legs disappears and a penis and testicles replaces it. a few seconds later, the testicles disappear and a slit replaces them. "you can change gender."
Wanderer (Vore Story)
His sack was gone as well, those dangling balls replaced with a smooth, fluffy patch of fur. not that the tiger was busying himself with looking down there, he was much more preoccupied with trying to escape!
A Dancer's Gaze
Her other paw came up to take hold of his shaft, squeezing the center while she kept on licking and kissing his balls, replacing any sweat on them with warm spittle.
Gorak and the Dragon
Gorak whimpered as the dragon-man's warm mouth slid more forward, the caressing hand on his testicles replaced with the warm softness of the mages mouth. the small, sharp teeth slid up his buttocks and up his front almost to his navel.
Predator or prey?
Prying the ball out of the bears mouth proved impossible, luckily this gag was made for easy ball replacement. which was why he'd bought that particular model, so he just left the ball imbedded in those huge teeth.
Misadventures in Dungeoneering
Her tail slithered delicately over their shafts as the jade engulfed their balls, replacing fur and skin with ecstatic green stone. it slowly moved over their frotting shafts, transfiguring inch after throbbing inch. closer.
On Holiday
They've been having their balls replaced with bigger, synthetic ones to impress the ladies." a soft squeeze keeps the lion's attention focused between his legs, while those big finger tip's caress. "these are real though huh."
A New Job - Part 2
Gone were his natural eye-balls, replaced with a composite that gleamed like glass or crystal, yet retained pupils for definition.
Masked Jackals
Human smelling cum expelled from the fattening balls, replaced with thick seed stained with corruption.
Inkei no Kami (God Of Cock)
Both ovaries and testicles are gonads, so she was left to wonder if the balls replaced hers or if she had two sets of gonads at once now...it wasn't really something she could check.
Vulcan Automata - Hiring Practices - Part 3
Now however his eyes appeared to be solid purple lenses, gone were his natural eye-balls, replaced with a composite that gleamed like glass or crystal, yet retained pupils for definition.