Juliel moaned as her girl cock was sucked like a seasoned pro. Though, it was kind of weird knowing exactly what skills her mom was performing on her, by using her own new skills for reference. Just how many dicks have they supposedly sucked in these bodies? Did she even find women attractive anymore? Kinda, which Juliel was alright with. Being bisexual just meant more options for her afterall, and her sister/mom was equally as interested in both sexes too.
But while this was perfect for Juliel, Mariel had one additional feature which she just "had" to impose upon her step-sister's cock. After slurping down Juliel's cum, Mariel quickly typed into the Chronivac the changes needed for her idea, then hit enter.
Juliel felt her cock suddenly point downwards, before being pulled further back behind her thighs. Her front was now smooth and featureless, but still gave that feminine look when covered by clothing.
However, behind her thighs, her cock remained pointed downwards and extremely erect. Her balls, now resting sandwiched between her cock, thighs, and ass cheeks, were made promptly visible from behind as they began to swell to the size of softballs. With her cock no longer between her legs, Juliel tightened her posture and closed her legs more tightly. Her cock then began to curl slightly back, away from her legs as her erection died down a little. However her new length remained the same, a whopping 14 inches.
As her now "flaccid" cock wagged behind her like a tail with every step, Juliel learned that she no longer owned underwear, and exclusively wore only skirts and dresses when not on stage. Her stage outfit however, had panties, and everything, as they would be removed from her body anyways during their routine, ether by her hands, or Mariel's.
Feeling like she was gaining too much, Juliel returned the additional change in kind, and gave both of them their missing sex organ between their legs. Now both sister's had cocktails, softball sized nuts, and a pussy on the front of their crotches, right where it woukd normally be.
Happy with their changes, but now hornier then ever, Mariel forced her daughter onto her hands and knees, then pushed her head down and raised her ass. Juliel's cock became rigid right away, and Mariel climbed on top of it, letting her body slide down ontop of it, while her own cocktail penetrated Juliel's pussy at the same time. She then began to hop up and down, as their bloated balls and sexy asses provided plenty of bouncy cushion for them to do this.
They fucked for a few minutes, before unloading into each other. But thanks to her quick hands, Mariel managed to remove their abilities to become pregnant just in time. Mariel then tried to pull them apart, only to discover the secret addition which her step-sister snuck in. Their cocks had knots, just like dogs, and they now were stuck together like this for a little while longer.
So, with little else to do but screw, that is exactly what they did, until their finally were tired enough and Mariel finally slid her dick out of her step-sister's pussy, just as Juliel did the same with her.