The sentance Emma generates is pretty straight forwards.
"Your Name is able to take Sarah's clit-dick partially into her mouth while she sucks on it."
She tries again.
"Sarah is eagerly fucking her horny girlfriend's mouth with her fully erect clit-dick."
Emma changes "clit-dick" to "tonguecock" and watches as Sarah's tongue pushes out of her mouth and swells into a fully formed, 9 inch long cock. She then yanks her clit-dick out and shoves her cock-tongue inside of your mouth instead. Next, she begins moving her face back and forwards, kissing you each time she gets close enough.
Emma laughs and generates another sentance.
"Sarah is face fucking her girlfriend's mouth."
A perfect sentance. Emma changes "mouth" to "mouthpussy" and sends it. You look over at a grinning Emma as your face distorts. Your nose and mouth blend together, forming a vertical slit. Your now vertical lips become a pair of labia as your teeth vanish entirely. Then a nub appears where your nose should be, completing your mouth's transformation into a mouthpussy. The pleasure immediately quadruple at least and you find yourself moaning wetly through Sarah's thrusts, as you taste both your own juices and her precum beginning to mix. Your tongue is still here, but is very busy with tending to the very welcomed foreign invader. You feel like a burp is building up inside your throat when Sarah presses against your nose, which is now your new clit, with her own nose on accident.
You immediately vomit, though in an amazing way as you cum with your mouthpussy, and cum harder than you ever before. You actually squirt out of your pussymouth, spraying Sarah's entire face with your cum while you drool incessantly with your new inability to fully close your lips.
Sarah herself begins panting and moaning, then makes an "LLLLLLLLL" sound before spraying you down with her own cum. You immediately begin slurping every drop of it down your throat, savoring in its rich taste. Then without warning, Sarah pushes you back onto the bed and pulls your g-string out of the way before ramming her clit-dick into your actual pussy while still pumping the remnants of her fresh tongue load down your gullet in a manner far beyond the normal means of French kissing.
Meanwhile, Emma still is listing over the entire situation and has been generating sentance after sentance in hopes of finding something she can use to make her idea work. And then finally she finds it after you try and ask her if she wants to join in yet!
"Your name is talking to Emma with her pussymouth."
Emma immediately jumps on it and changes "pussymouth" to "nipples". You both stare as your nipples begin expanding and widening. They then part into two halves as each form a pair of human lips. Then inside your new nipple mouth's, you feel teeth form, and even a pair of tongues grow into existence. Finally they connect up to your throat, completely separating your digestive/ new reproductive track from your respiratory system.
"Woah" You say in stereo as both of your new mouths speak simultaneously. "This is weird, but I kinda like it actually." Emma is grinning while her one hand is furiously going at her own pussy while the other is holding your phone.
"Oh Emma" You coo. "Want me to eat you out? I have a mouth to spare afterall." Emma shakes her head and looks down at the phone again. "Just give me more to work with." Is all she says.
You lick your lips and turn their attention to the beautiful dangling pair of nipples right in front of them. Sarah, who has yet to figure out what exactly is going on, ignores your new mouth and continues with her one man spit roast of you. That is until a pair of wet lips latch on to her nipples and she nearly cums again.