Turnabout is fair play.

"Ok, you two jokers," Kat said to the naked couple. "Let's flip it. Dani, you're in charge of Eric now."

"Do my changes still apply?" Eric immediately asked.

Kat thought very briefly. "Yeah. All the changes he made are still in effect."

"Then she's obviously not gonna fuck with my head," Eric said. Dani was still regaining her composure. "She's completely loyalty to me!"

"That was good call," Dani said. "I can't imagine wanting to mess with you at all. All I want is what's best-"

Kat was bored already. "Enough talk! Make some changes."

Dani shrugged and started giving orders. "Be more confident! Everyone who knows you thinks you're a really good guy, just accept that you are! Um, you should try to work out more-"

"What the fuck is this?" Kat said with irritation.

"I mean, I couldn't possibly do him any harm-"

"Fuck that!" Kat interrupted. "New rule! Your only motive is to fuck with him."

Eric's eyes widened at Dani's sinister smile. "Well, let's see," she said thoughtfully. "I still want that dick... I know! Eric, you need to forget literally everything you know about sex. You know what all of the anatomy is but the concept of sexual desire and the physical act are completely unknown to you."

Eric blinked. "What's unknown to me?"

"Sex," Dani answered with a smirk.

"Never heard of it," Eric said nonchalantly. "Is that how you're gonna mess with my head? By giving me 'sex'?"

Kat was enjoying the scenario now. She butted in and pointed to Dani's lap. "Hey Eric, do you know what the thing between her legs is?"

"Her vagina?" Eric said with confusion. "Does sex have something to do with her vagina? That's weird. Does it involve peeing or something?"

Dani thrust her chest out, immediately grabbing Eric's attention. He stared at her bare breasts as though seeing them for the first time.

"How about these?" she asked, swinging them side-to-side slightly.

"Those are, um, breasts. Wow, I don't know what's going on but they look really good. Like, really good. Is this sex? This feeling I get when I look at your breasts?"

The girls laughed and Eric smiled, not understanding why but enjoying the fact that they were happy. "Sort of," Dani said. "Do you want to touch 'em?"

Eric nodded. "If you don't mind, that would be- oh!" He exhaled sharply as Dani brought her hands up to her ample chest. He slowly began to knead them. Kat interjected again.

"I'm curious if he remembers any other words for them. Eric, what else are these called?"

"Boobs? Is that what you're looking for? Or tits, or jugs, or cans, or melons-"

"Why do you suppose we have so many names for them?" Dani asked. It was starting to feel like she and Kat were co-conspirators. She liked it.

"I never thought about it! I guess it has something to do with how they're making me feel. I feel- oh wow, what is THAT?"

Eric was staring at his erect penis. It twitched slightly and he let out a startled yelp. "Is it supposed to do that? That's never happened before! I didn't know it could go all straight and rigid like that!"

Kat reached around from behind him and began to slowly stroke it. He moaned gutturally, overcome with pleasure. "Is this sex?" he asked incredulously. "Whatever it is, I fucking love it!"

Kat gave Dani an amused look. "Ball's in your court, Dani. Should we show him what sex is?"