Something started pushing out from your mother's pussy. It drew your attention back to her folds, forgetting for now about the Being and His voyeurism.
Your mom's clit was expanding, gradually stretching forward and widening. Simultaneously, you were losing your ability to dive your tongue into her canal as it was sealing itself up somehow. The motion of your efforts changed as her clit continued its expansion, from a roundabout swirling tonguing motion to a bobbing up-and-down motion around her clit.
The end of her clit began to flare out and grow bulbous, and in a corner of your mind you knew what it was turning into. Your mom's slit, meanwhile, had been fully sealed, and changed in texture to a soft leathery complexion. Not a moment later, two large orbs forced their way out into their new pouch, her ovaries having been converted and enlarged into a pair of tangerine-sized testicles. The tip of her new penis finished its change into a fat spongy mushroom head, spearing into your mouth at the end of a huge 10-inch veiny shaft.
You noted the change in flavor of the fluids flowing over your tongue, as they were altered from vaginal discharge into precum.
The change completed, you were now slurping up and down on your mother's fat dick while your dad still fucked you in the ass. Inexplicably, this made your cock harder than ever before. It stood completely rigid under you, so hard it didn't even move from the force of your dad's thrusts. Something about your beautiful MILF mom having a huge cock was driving you wild. It made you suck her off all the more ravenously.
"Mmf! Oh sweetie!" your mom cooed. "You always suck my dick so well! Hhah!"
Your dad was pounding you from behind like an animal. He tightly gripped your thick juicy hips and let out grunts from his pleasure.
"That's right son, suck your mother's cock," he growled. "Throat that big girldick... fffffffffffffFUCK!"
You were forced to deepthroat your mom to the base and hold her there while your dad brought himself to orgasm. He roughly slammed into your ass a few more times before groaning as his balls unleashed their bounty. You felt a warmth in your belly as it was filled with your dad's semen.
He slumped against you as his climax ended, huffing heavily. You moaned as he pulled his dick slowly out of your battered backdoor. The head exited with a FFFFFFOP!
You resumed your bobbing motion on your mom's schlong.
"How was his ass, honey?" your mom asked sweetly.
"Incredible," your dad panted, patting one of your hefty cheeks before groping it tightly. "Fantastic as always."
Your mom chuckled. "I may need to try it before he leaves... for old times' sake. Oh, how I wish he could stay here."
The futa MILF gasped as your tongue dragged across her D-spot. Making her feel good filled you (in addition to her penis) with a true sense of joy. She always was so caring and loving to you and your siblings. A blowjob was the least you could do.
"Heh, well..." your dad began with a smirk. "We could always just command him to stay here as our personal sex-slave. His boss would understand..."
"Hmm, you're right," your mom contemplated, even around moans from your blowjob. "We could do that..."
Just as you thought they were about to spellbound yourself to them forever, the front door opened.
In walked Jessica, your 17-year old sister.
She had truly blossomed from puberty. She clearly had received the same genes from your mom as Jenny had. She had a great feminine figure, with wide hips, thick thighs, an excellent butt, and large perky supple breasts. Her brown hair (that matched yours and your dad's) was tied up in a loose bun. She was wearing a lowcut athletic top that displayed her excellent deep cleavage, and a pair of black yoga pants that tightly gripped her tantalizing legs and ass.
Out of the corner of your eye, you also spotted something... else.
Upon spotting you, Jessica beamed her bright beautiful smile.
"Ben's here!" she cheered, seeing absolutely nothing wrong with her big brother sucking up and down on some mad MILF dick.
"Yup, got here maybe twenty minutes ago," your dad replied, pulling his pants and undies back up his legs as he stood up. "Just enough time for me to pump my first load into him, haha."
"Uhhhhffff, how is Emily, dear?" your mom asked, gripping your hair with one hand to guide it up and down her length.
"She's great mom!" Jess answered. "We fucked her mom from both ends, haha!"
Wait what?
"Good, I'm glad," your mom replied. "Her mom does have a wonderful big ass. Although, not as wonderful as our Little Slut here." She ruffled your hair as you tirelessly continued servicing her. You were now gripping and squeezing her fat hairy balls with both hands, eager to eke out their contents. Why were you so hungry for your mother's cum?
"Speaking of which..." Jessica began, lowering a hand to rub at her groin. Your eyes widened as you finally made out the obscene bulge tenting out her yoga pants. "I know I just came down Emily's mom's throat, but since Ben's here... I could definitely go again."
"Well, his ass is ready to go, my own cock saw to that, haha," your dad laughed. He walked over to his youngest daughter and slid his big manly hand into her waistband. Jess groaned as her dad roughly gripped her shaft.
"D-dad!" your sister grunted as he stroked her a few times.
"What? Just making sure you're ready to pound your brother senseless," he teased.
Surprisingly, your dad then pressed his lips to Jess's and the two started to french passionately. Your sister attempted to speak around kisses.
"[kiss] If you're so [kiss] concerned about it [kiss] why don't you just [kiss] offer me your ass? [kiss]"
Your dad broke their kiss and smiled at her, still stroking her cock in her yoga pants.
"You know the rules, sweetie," he answered. "Only on your birthday or Christmas."
"Yeah yeah," Jess sighed, her dad finally releasing her shemale schlong and pulling his hand from her pants.
Your dad then stepped aside so Jess could set her sights on you. She stared hungrily at your wobbly girly asscheeks.
"Mmmmmmmm," she hummed. She hooked her thumbs around her waistband and pulled it downward. Immediately bobbing upward was an impressive chubby 8-inch cock. The base was surrounded by a stubble of shaved pubes, while her low-hanging kiwi-sized nuts were smooth-shaven.
Finishing removing her bottoms, Jessica stepped out of them before flinging them aside with one foot. Both of your parents watched her with interest as she stroked her erect penis while slowly walking over to you.
She came to a stop directly behind your ample ass -- an ass that was even bigger than her own. She smiled at the sight of her dad's cum oozing from your gaping hole before lowering down to her knees and lining up herself.
Your sister wasted no time and thrusted forward, burying herself inside you, and making you moan around your mom's cock.
You'd hate to admit it, but you were relieved to once again feel a cock stretching you out. It had to be the Being's doing.
Also, did He just make all your female family members shemales? Or did He make every woman on the planet sprout a fat schlong?
You couldn't think about it much more as almost immediately your sister began to pound you roughly. Her cockhead punched your prostate, making your insides sing with pleasure.
The shemale MILF in front of you certainly enjoyed it, as your efforts on her own cock were once again invigorated by the addition of some excellent anal reaming.
"That's it, sweetie! That's it!" your mom moaned. She was now gripping your head with both hands, powerfully forcing you onto her momdick and sending her large sweaty balls colliding against your chin with each thrust. "You make mommy feel so good! I'm gonna... I'm gonna!"
She cried out as she orgasmed. You felt her enormous penis pulsate in your throat as she came, ropes of thick hot MILF cream firing down your gullet and into your stomach.
Your mind was filled with euphoria. You made your mom cum. You were such a good little slut.
See? I knew you'd enjoy it, the Being's voice echoed in your mind.
Fuck. He's right.
You leaned your head back, sliding your mom's exhausted member up your throat before it loudly exited with a SCHLOOOORP! Your mom gripped the base of her thick anaconda and used it to drape her meat across your face. The warm fat beast rested heavily against you, the distant head oozing the last vestiges of her climax onto your upper back.
"You're so wonderful, love," your mom doted, panting with atrophy.
Even with your sister fucking away at your asshole, you smiled back at your mom, one eye blocked by her mega-sized schlong.
"Thanks mom," you replied lovingly.
What happens now?