A copy of him

Eric pondered the question for a while. "Can she be me?" he asked eventually.

"I don't know Dani, can you?"

Dani jolted backwards, almost losing her towel. "Whoa, this is weird."

"What, suddenly being someone else?" Eric inquired.

She didn't answer immediately, looking down at her chest and pressing the towel against her boobs with both hands. "Yeah, this body is... different."

"Wait, your body? I thought you'd be weirded out by the personality switch?"

"I didn't switch personalities, I've always been myself! Or you, I guess. It's weird seeing myself from the outside. But suddenly being in this female body is even weirder." She squeezed. "I'm so... soft."

Eric was taken aback. "But you've been Dani just about a minute ago! Kat just made you pretend you were me!"

"I'm pretty sure I'm not pretending. I am you!"

"But I'm me!"

Kat watched the duo in amusement. "No you're not, you're Dani!" she said to the male Eric.

The latter made a confused face. "Whoa, when you asked me to be Eric I didn't expect to suddenly be in his body!"

All three sat in silence for a bit, trying to wrap their heads around the situation. Kat took the initiative. "Both of you, become aware of what happened but keep your current personalities."

Female Eric's eyes lit up. "Oh, so that's what happened!"

"Wait, so I'm not really Dani?" The person in the male body asked.

"No, you're me! Or you're Eric I guess, since I'm not actually Eric. This is pretty confusing, but I think it's starting to make sense. I'm actually Dani, but Kat asked me to be Eric, so I remember being Eric."

The male Dani still didn't quite get it. "But she never asked 'me' -- the original Eric, I guess -- to be Dani? At least I don't remember that?"

"Yes I did, but I guess there was no Dani around to hear it," Kat chimed in. "So you actually keep your personality's memories, that's fascinating!"

"Oohhhh, that makes sense now. Or at least a bit more sense than before. Still weird, suddenly having a dick." He unzipped the fly of his pants and fished around in there.

"Ew gross, I don't wanna see my own dick from this perspective! Keep it in there!"

"Why not? Don't you want to make the most of this opportunity? I mean, I can't say I'm that turned on by you in my own body either, but that's nothing Kat can't fix, right?"