Family Fun

Mark quickly formed an idea, and with a devilish grin, began to type.

Mark's mother Emma was the first to arrive home, and Mark got to work. He pumped up her tits until they were large, squishy H-cups, and a huge bubble butt. He then made it so that she only wore slutty, revealing clothing at home. Smiling, he took himself and his phone (which now had a copy of the app on it) downstairs to the kitchen, where he began making more changes as his mother lounged on the couch.

"SPPPLLTT- WOAH"

The sound caused Emma to remove her fingers from her needy pussy, and to go investiagte the kitchen, where she found Mark standing in a puddle of his cum. Mark seemed to be staring at it in surprise, perhaps he had cun earlier than he had ment to. "Mark, honey, will you clean that up. I don't want to slip and fall when I'm making dinner" Emma called out, her and her fingers returning to their usual place.

Soon Mark came into the living room and flopped down onto one of the armchairs, watching Emma pleasure herself, his large girthy fuckstick bulging obscenely. Emma noticed the bulge, and a pang of guilt shot through her for not noticing her son's needs. "Sorry baby, I got distracted" she giggled, spreading her pussy open with her fingers. "It's alright" Mark replied, already standing and stripping off. and climbed on top of Emma, then began thrusting in and out. Each thrust sent an orgasm ripping through Emma, and soon she was moaning incoherently. After about 15 minutes of pounding, he unleashed his seed, which caused her stomach to bulge out and Emma passed out. His balls not yet empty, he moved on top of her and began thrusting between her soft plush tits, and he had soon painted her face and tits with his perfect white, thick cum.

Mark had just sat down when he saw a car pull into the driveway. It was his sister Mary. Mary was more athletic than Mark, or his other sister Jill, and even had visible abs. Mark quickly got to work, and gave Mary E-cups and a juicy ass, but replace her pussy with a cock like his. This time mark had the privilege of seeing his changes happen in real time, and it made his cock shoot up instantly.

"Hey, I'm home" Mary called out at she opened the front door, and she then headed for the living room. "Oh, Hi Mark" she said upon seeing her brother, and he returned her greeting in kind. She looked over to where Emma was passed out, Mark's cum still wet. "She passed out again, huh" she said, moving over to the couch, and she used flipped her over and began pounding her ass, the sight of which almost made Mark cum. After 20 minutes of relentless pounding, she finally came, and pulled out of her Mother's ass with a wet *Schlick*. She caught her breath for a second, then told mark that she was going to watch TV in her room.

Mark opened his newly installed Master PC app, but the sight of his mother's ass was just irresistible, and before he knew it he was pounding into her jiggling ass, ripples spreading out every time he thrust in. Soon he was cumming, but then he heard something that sent a chill up his spine.

"What's Master PC?"

Mark froze and turned to see his sister Jill, who must have come in while he was in Emma's ass. She had his phone loosely held in one hand. Mark rushed over and grabbed it, but realised that he didn't have a lie ready, so elected to tell the truth, that it could change reality. He didn't mention any of the changes he had made, hoping Jill wouldn't ask.

"You gave yourself a big dick, didn't you?" Jill said rethotically, as despite knowing that her brother had always had a huge cock, she knew him well enough to know that that would be the first thing he would do. "Mom's a sucker for them." Jill couldn't exactly blame Mark for doing so, as having a Mom as hot as theirs would be a Curse if she wouldn't let Mark and Mary get some every now and then and she was a total size queen.

Jill glanced over at her mother, and thought of Mary, then finally to her own chest, which was non-existent. "Hey Mark, could you use that thing to give me tits like mom and Mary?". Mark was stunned for a second, processing the fact that his sister was willingly letting him change her. Mark blinked s couple of times, then began to type.

"So will I feel it happening?" Jill asked, her pulse quickening. "Nah, I've got it set to instant right now" Mark said. Jill thought he was taking a long time to simply bump up her tits a few sizes. "Well, since you asked nicely, I'm adding in a few surprises for you" Mark replied. Jill was about to ask what exactly he meant by surprises, but before she could say anything, Mark said "All done" he said, and pressed the confirm button.

Jill looked down, and her eyes widened at what she saw. her white T-shirt was stretched around her two G- cup tits, the fabric completely enveloping each tit. Mark had also put a mirror in the living room, and Jill took a look at reflection. She saw that he'd also improved her ass, putting it somewhere between Mary and Mom's. That must have been one of the surprises Mark had mentioned.

"Wow" she whispered, groping her tits. She looked to see if she could see any of these other surprises, but nothing jumped out at her. Her black hair with electric blue highlights was the same, as was her plump lips and pierced nipples. She moved her gaze further down, and looked at her cock and balls, but didn't see anything different. She pushed a couple of fingers into her self-lubracting asshole, but nothing seemed different there.

Jill flopped down on an armchair om the other side of the couch. she'd just have to ask Mark directly, but first she wanted to play with her tits some more. As she mashed her tits together, Emma's eyes fluttered open. "Hi Mom" said Jill. "Hey honey" replied Emma, her fingers already moving to her pussy. All of this tit-play had Jill hard as a rock, amd she needed to blow off steam. She stood up and easily scooped up Emma, and pulled her into a full Nelson, and quickly began pounding her pussy.

The sight of Jill pounding their moms pussy, and their tits bouncing and jiggling, made Mark jealous. He quickly set about rectifying that. He decided that he wanted his awareness of for this change. Mark had looked like his sister before, just with blond hair, and he intended to make them similar this time. he decided to let her have the bigger tits, while he had the bigger ass. Once he was happy with the changes, he pressed confirm.

It was a weird feeling for Marcie. Intellectually she knew the changes she'd input, but she also felt like she'd always been like this, but either way she felt hot as hell. Jill was just pumping a load into Emma when Marcies eyes returned to them. As Jill put emma down, Marcie waltzed over to her and pushed her to her knees, and thrust her cock into her sisters mouth, easily pushing past her plump lips. As she thrust in and out, she put her hands behind her head and thought "This is the life"