Jack waved his hand and caused his cum to vanish from Fiona's room, leaving everything exactly as it was before his orgasm.
He looked down at the sleeping teenager, and compelled her to remain sleeping until 7 AM the following day. To make up for the fact that she'd lose half a day in which she could have been showing off her new body, he blasted her with some more growth, which would slowly take effect as she slumbered, and ordered that she too would always be naked like Ben, Lauren, and Ben's slaves.
--
Lauren lay on her bed rubbing her tits. All her erogenous zones were hyper-sensitive, she'd discovered, and since they were linked she was feeling a massive orgasm crashing all through her body. Right then, she was again gushing pussy juices, shooting huge ropes of cum, and spraying milk everywhere... or she would have been, except that she was also sucking in very slightly, which caused all those liquids to flow right into her mouth. The mixture was the best thing she'd ever tasted.
Of course, while masturbation was great, she really wanted to try out her new cock with someone else, preferably a girl. She'd get around to fucking some guy's ass with it, of course, but she wanted her first experience to be with a nice, tight cunt.
--
Jack, of course, wasn't about to let anyone else have sex with Lauren before he'd tried the body he'd given her. But he didn't want to change her desire to have sex with a girl, which meant that he'd just have to turn himself into a girl.
That was easy enough, of course, and he ordered his body to become more feminine (while remaining every bit as muscular as it already was) and he grinned as he watched his hair grow, his ass balloon out, tits bulge on his chest, and his cock retract into a juicy, tight pussy...
Jill grinned as her pussy grew in. She shivered with the anticipation of sticking Lauren's dick in her vag. She hefted her huge tits, bigger even than Lauren's despite the fact that she was a foot shorter, and began to shift her physical presence to the birthday girl's bedroom, but...
Jack panted as his body instantly became fully male. That was disturbing. He didn't like the idea of becoming someone else when he gave himself a female body.
But then he thought about it, and he realized that he wasn't really someone else; he was as he would have been as a girl. Still, he was determined to cling to being himself when he changed, and...
Jill remembered being Jack, of course, but she was most definitely Jill. But as she thought about it, she realized that she was also Jack. She was fully Jack, in fact, every bit as much as she was fully herself, and Jack was fully her and fully himself. There was no real difference between her and Jack, and as she realized that she gave herself a male body while still thinking of herself as Jill. And...
Jack smiled as he hefted his tits and mentally fingered his pussy. He was glad he'd resolved that brief identity crisis. He was Jill, and he was himself, and he no longer had any misgivings about being Jill or being himself. So...
Jill vanished from Fiona's room and reappeared in Lauren's.
--
"I see you're having fun with my gifts," said a voice so sexy Lauren couldn't help but sit up, which caused her cock to shoot a huge glob of cum right at the voice's owner.
The girl in question waved a hand and the cum vanished right before it would have coated her from head to toe, and Lauren's orgasm stopped.
"Jack?" asked the eighteen-year-old.
"I guess, although I prefer Jill right now."
"Okay, Jill, what are you doing here?"
"What do you think? Did you really think I was going to let anyone else be the first person you'd fuck with that thing?"
If it had been possible (absent Jill's omnipotence, of course) for Lauren's dick to get any harder than it already was, it would have. As it was, it simply twitched and leaked precum, even though it was already fully coated with semen.
Jill crawled onto the bed. She had to levitate a bit in order to get the tip of the gigantic penis aligned with her cunt, but once it was, she plunged down hard and fast, and Lauren screamed as all four feet were enveloped in the tightest pussy ever created.
As she panted with the sensations as Jill began to move up and down, her hands reaching for Lauren's tits, the human said, "But, wait, if I feel all of your sensations and I feel all the sensations of the person you're fucking..."
"Yeah?"
"Then I'll feel my own sensations, and I'll feel those, and those, and those, and so on, and my brain can't handle that!"
"Do you really think," laughed Jill, "that I'd let you come to any harm? Trust me, you're way too sexy for me to let you fry your brain from too much pleasure."
"Promise?"
"Of course. Now play with my tits and kiss me." Jill stretched out her neck and the two young women made out while they fucked.
A few hours later, Jill broke the kiss and flew upwards, lifting herself off Lauren's dick.
"Watch this," she said, and she reached down to her waist and twisted. Her lower body turned, leaving Jill's sexy face still looking at Lauren while orienting her ass to be reamed out by the monster cock. Jill let gravity take hold and both girls screamed as forty-eight inches of meat violated the tightest ass in the universe.
--
Lisa Parker flounced into her bedroom and slammed the door.
It was so unfair!
Why did her brat of a younger brother get to have two slaves while she didn't have any?
And all he'd said as Hannah and Natalie greedily sucked his cocks at dinner was that his prayers had been answered.
"God, why won't you answer my prayers? One slave, that's all I ask. Just one nice, well-muscled slave with a nice big dick."
Suddenly a huge young woman appeared in her bedroom. She had the look of someone who was currently being fucked very hard, given the way her pussy and ass were clenching.
"Who are you?"
"I'm God, but call me Jill." There was a note of panting in her voice.
"And why are you here?"
"To answer your prayer, of course. You know that jerk Bruce who's always bullying you?"
"Yeah."
"Well, he's yours now, and I've given him a twelve-inch dick as well. He'll do everything you say and is completely devoted to you now. Oh, and have a sexier body on me." The girl vanished.
Lisa had been standing in front of her mirror during the exchange, and she gasped as she instantaneously changed from being clothed with a 34C-26-34 body to being nude with a 36J-22-48 body. In the same moment, Bruce appeared behind her. She whirled around and saw that he did indeed have a hard, foot-long cock. He fell to his knees as she turned.
"How may I serve you, Mistress?" he asked, and many nasty thoughts flowed through Lisa's mind.
--
It was morning when Jill finally halted her marathon sex session with Lauren.
"Damn, I need at least two days of sleep after that!" the huge hermaphrodite said.
"You've still got school and I'm not letting you off of that... well, yet," said the omnipotent teenager. "But you do feel fully rested now, so get up and get ready."
Jill vanished, and Lauren hopped out of bed, full of energy, and headed to the bathroom.