A new mouthfeel

"What? I heard you guys snapping through the door," Annie said as she lifted her hand a little. "Brainworm," she said in rhythm to the to two final snaps.

You eagerly suck on a fat cock that is making your jaw hurt, bending over to ease its thrusts up and down your throat. Thank God for not giving you a gag reflex and strong lungs so you could enjoy nature's boons now and then like they were meant to be enjoyed.

Behind you you could feel Matt working on your pussy, how she loves to do when you're sharing her lover.

Which is your domineering sister and her massive cock. A cock she likes to say she stole from your former selves. It certainly is as big as both of your former dicks combined.

(Yasmim Dornelles)

"It's been too long since I let you two play, sis," Annie giggled as you felt her cock throb. You slid it back into your mouth so the arriving dollop of Annie's musky pre-cum would coat your tongue.

Yes, it's been too long since you had any of your sister's forbidden fluids. At least a week. You've always swallowed, and sometimes she's let you put on a condom and ride it, but you are not allowed to get pregnant by her seed. At least, not until you've found a way to solve that incestuous inbreeding issue.

One day the app might be able to bring you closer than ever.

Wait, the app, the snaps, Mattie's mouth on your pussy... It's happening again! You try to wiggle your butt so that Mattie can't get a good position on your sex, but she's insistent. Maybe she remembers too. She's also Annie's fucktoy, and she's not related. Already now you can see the bump growing on her belly.

"Why do I have a dick and why are you sucking it, Luke?" Annie asks in a different tone as she seemed to realize something was going on as well. "Oh God, I'm a freak... but it feels so good!" she said as she grabbed hold of your head and began using your mouth as her personal sex toy.

"Mmph, Annie, don't cum," Mattie sputtered from between your cheeks. "Luke needs to cum too, or things might not change."

You **** a protesting sound around Annie's cock and wiggle your but more. Mattie might be right, and if that's the case, Annie might become a shemale in real life, fucking you and Mattie like the cock-starved harem girls you are. Oh god, just the thought of Annie lining the two of you up on top of each other, your clits rubbing against themselves as she creampied your fertile pussies made you squirt a little on Mattie.

"I'm not sure I can hold out much longer," Annie moaned as she tried to slow down. but you knew the throbbing of her dick too well. She was about to fill your stomach with enough batter to keep you with proteins and fluids for a day.

And that also triggered another squirt and orgasmic throb from you. Oh God, was that enough? You ponder as the unknown room turned bright as Annie's cock overflowed your belly, coming out your nose and mouth, her dick propelled out of the pressure and slapping Annie on her belly.

Suddenly you were back in your room, keeping your balance as you regained your senses. You looked around the room to see what had happened to your sister and Mattie.