Further modifications

As Sarah fell forward her cheeks spread and James caught sight of her tight asshole.

The cells at the base of Melissa's tongue began to divide rapidly - even as it was still buried in Sarah's eager cunt.

Melissa starred at the lump on the base of her tongue, it quickly grew into its own protrusion...

Sarah's eyes widened when she felt the wet tickle on her taint. It slowly travelled up and traced circles around her ass. With a sudden thrust Melissa plunged her new appendage into her nemesis's ass.

On  reflex Sarah shot back up, arching her back and moaning. Melissa worked her new organ in and out of Sarah's most delicate of orifices - her face and hair were saturated in Sarah's cum, and she wasn't slowing one bit.

Without missing a beat Melissa raised her hips, unclasped her jeans and pulled them down. Melissa needed relief, she began to fondle her lovely pussy with an experienced hand.

James wanted to show Melissa his appreciation for such a good show. Just as with her tongue, her clit began to elongate. It remained just as sensitive as before but was now 6 inches long and 2 inches in girth.

James lowered Sarah's head and she began to lick Melissa's clit-shaft, before taking it entirely in her mouth.

Sarah's tongue now began its own transformation, elongating and wrapping around Melissa's giant clit like a velveteen boa constrictor.

Sarah began to squeeze and release Melissa's clit while simultaneously slurping its length. Melissa couldn't comprehend her ecstasy. She bucked her hips, fucking Sarah's mouth as her pussy convulsed.

Both women were cumming their screams and moans muffled by the others genitals. James decided to hold them in this state of perpetual orgasm.

He almost lost his concentration when the door opened...