An answer?

When Toby woke up the next morning, he knew something was very, very different.

Not where he was. That was quite pleasant, what with having his dick in Ronnie's pussy while his other dick was firmly positioned in his ass and two of his four massive tits pressed into his back. And not that he had Bethany's tongue on his cunt while he ate out Riley, who in turn was giving Beth anilingus. All that was just fine.

No, what was clearly different was that he'd come to a realisation overnight about what had happened to him over the last week or so.

That, and the fact that he'd grown. Again.

Carefully extricating his mostly-soft cock from his girlfriend, he pushed a mental signal into his shared consciousness that made his other two bodies stir, Tam pulling her own dick out of his butt while Tab eased out of her daisy chain.

"On the one hand," Tab said, looking her other two bodies up and down, taking in their new, higher perspective, noting their larger tits and longer dicks, appreciating their heavier musculature, "this is getting even more ridiculous."

"On the other hand," Tam went on, completing the thought, "at least we have some idea as to what's causing it."

"How far can we go with it?" Toby asked himself.

"Won't know until we try, I guess," Tam concluded.

The shower was just barely big enough for all three of them to squeeze in, not that they minded having four gigantic boobs and two massive cocks pressed up against themselves. It made moving about to clean off the night's sexual sweat and stink more awkward, but they hoped that wouldn't be a problem for much longer.

"And if it is," Tab said, "we can always just ask Riley to get the renovations done anyway."

"Yeah, but those would take a while," Toby pointed out.

"Better that than a too-small shower," Tam said, taking a bit longer than she should to dry Toby's dick, her own twitching sympathetically.

When the three-bodied person emerged from the bathroom, it was to find Ronnie, Riley and Beth all awake, themselves looking a little exhausted from the night's activities.

"You've grown," Beth said, stating the plainly obvious.

"I told you we were," Toby reminded her. "Care to help us find out how fat my tits are?"

It took a bit more doing than before, but between the four of them, moving six bodies around, they eventually determined that Toby, Tab and Tam were an even seven feet tall, with 36P chests, eighteen-inch dicks, and fifty-five-inch asses.

"Not that measurements matter all that much once you're this big," Riley said. "Everything's gotta be custom-made anyway, and the tailor will want to come and measure you herself when I put in these numbers."

"I might have a solution to that, actually," Tab said.

"And what would that be?" Ronnie asked, softly stroking Tam's cock, lightly edging her futa lover.

"I think I've figured out what's caused me to undergo these changes," Toby said. "I don't think it's anything external. It's just, I guess, something about me."

"What sort of thing about you?" Beth asked curiously.

"I think you'll want to examine us when I finish explaining," Tam said, in between light gasps as Ronnie continued to stroke her rod. "Medical office."

The other three nodded, Riley made sure that the staff weren't anywhere near where they'd all be walking, and six naked bodies trooped off.

--

"All right," Beth said, settling down in a comfortable swivel chair, showing no sign of caring about being naked in front of three other people whom she'd just spent all night fucking, "what do you think's going on?"

"Remember how I said I used to play make-believe with my friends when we were kids, we'd pretend to be female versions of ourselves?" Toby said. Ronnie nodded. "I called myself Tabitha when we'd pretend like that," he added for Riley and Beth's benefit.

"Hey," the rich girl said, "won't deny that I've always been just a bit curious to know what it's like to have a dick."

"Did you ever..." Beth trailed off, not wanting to go too in-depth on a subject that might be particularly sensitive given what had happened to Toby over the past few days, but he picked up on it anyway.

"No, I've never felt like I'm in the wrong body as such," Toby said, picking up on what the doctor had thought to ask.

"I still don't," Tam added. "It's a bit weird, but I feel more... I guess more like me now, if that makes sense."

"Anyway," Tab said, "even though I'd always been comfortable as Toby, I'd felt, I guess, incomplete. Memories of being me had just kept on lingering, and as I got older, especially once I met you, Ronnie, the thoughts got more sexual, though I'd never really consciously realised them."

"Your subconscious wanted to have lesbian sex with me?" their girlfriend asked. "Damn I'm good."

"Something happened that night," Toby said. "Don't really know what it was, but I guess it somehow let me make myself more complete. So my female alter-ego went from being a part of my subconscious I rarely thought about to being a fully-realized person with whom I shared a mind."

Tab nodded. "We're different parts of who I am," she said. "I just wanted to get in touch with my feminine side so badly that it became literal." She smirked.

"What about you, though, Tam?" Riley asked. "From what you told us, you never had any particular daydreams about being a futa."

"I didn't," Tam confirmed. "But I showed up after I fucked myself silly in that hotel room, remember? I removed whatever low walls had existed between Toby and Tab's identities and fucked myself as truly a single person with two bodies. And I guess what happened is that I saw myself so strongly as a single person with a cock, boobs and a pussy that I created a body for myself with all of those."

"Bottom-line this for us," Beth said. "Are you saying that you create a new body for yourself whenever you perceive yourself to be incomplete?"

"Maybe," Toby said. "It's like, there's a part of myself that wants to come out and experience the world directly, and I can just, poof, let it do that. I guess."

"Spontaneous generation," Beth mumbled. "If only I could write a paper on this."

"Hey, it's taking a lot of nutrients to replenish whatever I lost to make me!" Tab said, and Tam nodded. "It's not just coming from nowhere."

"Making a new body like that should've left you emaciated, not built like a muscular porn star or something," the doctor shot back.

"It might well have," Riley said soothingly, "if they hadn't been eating ravenously for the last few days."

"What are you suggesting," Ronnie put in, trying to get the conversation away from the incipient dispute, "that you might just be able to will bodies for yourself into existence if you would feel more complete with it?"

"I think it's worth a shot," Toby said. "Best-case scenario, I can do it, and I can put bodies away if I really want to."

"I doubt you will," Ronnie replied. "Yeah, you said it was weird at first, but that it didn't take long for you to feel like it was right."

Tab nodded. "So, second-best scenario, I can just create more bodies for myself. I'll have to be a little more judicious about it in that case. Don't want to overrun the world with more and more me."

"Next scenario," Tam went on, "I can't create more bodies, but it's because I realize I'm just right as I am. I can't just **** myself to feel less than I should be, and right now I feel pretty content as is."

"Worst-case scenario," Beth interrupted, "you create more bodies for yourself but the drain on your resources kills you."

Riley and Ronnie glared daggers at the doctor, but Toby just nodded. "It's a risk," he acknowledged. "But as long as I take it slowly, I don't think I'll just croak immediately. Would be good to have plenty of food at hand, though."

Riley sighed. "Breakfast should be ready. I'll have them wheel it down here."

A few minutes later she pulled a cart loaded with their morning repast into the office.

The three women nibbled on various things while Toby, Tab and Tam stuffed quite a bit more food down their gullets.

"So what are you going to try first?" Ronnie asked. "A twin for Tam?" she suggested, wiggling her eyebrows at the busty, hung futa.

"I don't think that'll work," Tam said. "This part of me has already manifested in this body; there's not another part to be brought out that most sees itself as this."

"That said," Tab added, "now that I see myself as being more complete when I've got all the fun bits, any future bodies will almost certainly have them, too."

The two other students grinned at that pronouncement, and Beth took on an air of curiosity. "So what are you going to try, then?" the doctor asked. "You're already in the realm of the fantastical, frankly, and it seems like you may have pretty much exhausted expected human forms."

Toby nodded. "As you said, this is the realm of the fantastical. But it's real, so why can't things yet more out there be real, too?"

"I'd say being one person with three bodies is already extremely out there," Riley said.

"Three bodies but all of them basically human," Tam reminded her.

"So you're going to try to create a non-human body for yourself?" Ronnie asked, failing to keep the excitement out of her voice.

"Not that non-human," Tab said. "But I've had a crush on a certain elf ever since we watched that trilogy together a few years ago. Always thought she'd be hotter if she were buff and had massive boobs."

Ronnie smirked. "I remember our roleplay sessions for the next few nights after that."

"Having a crush and thinking someone would be hotter wouldn't be enough to make you feel incomplete, I'd think," Beth pointed out.

"No," Toby agreed, "but now that I've thought of it, I can already feel how incredible it would be to be a classic fantasy elf, eternal youthfulness, maybe supernatural powers, ethereal beauty."

"I can feel that too but I'm not the one who gets to create new bodies for myself at a whim," Riley groused.

Tab just gave Riley an enigmatic smile.

"Well, if you're gonna try it," Beth said, "might as well do it now." She paused. "Do you need to pass out or something?"

"I don't think so," Tam said. "I think that was just a coincidence. Not sure where my new body will show up if this works but I'll know soon enough if it did, of course."

The three-bodied person looked at the others in the room, as if silently seeking permission.

"What are you looking at us for?" Ronnie said. "I love you, and I hope Beth's not right about what will happen, but if you're determined to try this, I'm not going to stand in your way."

"I love you too, Ronnie," Toby said, embracing his girlfriend. "And, Riley, Beth, I'm grateful for what you've done, even if it's only been a day or two. If this goes badly, I hope you'll always know that."

"I'll look out for Ronnie," Riley promised. Ronnie looked sideways at her, but the rich young woman just said, "You'll need it if the worst happens."

At Beth's insistence, Toby, Tab and Tam had some measuring equipment hooked up to them, and then they started envisioning themselves as something more, more complete, more who they dreamt of being, more themselves.