Obviously, John has to fuck her ass for her own safety

John kept pistoning his cock in and out.

"Believe it or not, we have to do this the hard way-" John punctuated the word with a harder thrust of his cock "because it's safer for you in the long run."

Veronica grit her teeth slightly as the spit-lube started to dry out a little and the heat started to pick up a bit again. It seemed to affect her long before it did him. "I believe you. But I don't get it. How is this... unnggh... safer?"

"Because baking things in unconsciously is harder to erase. Here, look at it this way. If I tell you to magically learn how to ride a bike, then someone else can erase it with a short sentence. But imagine I taught you how to ride a bike the hard way, instead." John was glad that he had fresh spit-lube again, less effort pushing into her tight ass made it easier to talk while he fucked her. "You aren't just learning how to ride, you're getting a bunch of extra muscle memory that goes with the task. You know how to stand with a bike between your legs, for example, in a way that feels comfortable. You know how to balance. You learn how to do things that have nothing to do with actually riding a bike. If I command you to forget how to ride a bike, I don't necessarily erase all of that extra knowledge."

Veronica kept listening to what he was saying, but started to focus on sort of... meditating through the pain that was slowly growing. The inside of her ass felt raw - like she had needed to wipe with course toilet paper for hours, and *then* John had stick his dick in her. She tried to control her breathing and just... relax.

John felt a little discomfort in his dick, but not a lot, as Veronica felt the beginnings of that same fire in her asshole spark again. He continued. "So let's think about ass-fucking now, yeah? Imagine some guy starts fucking you, and commands you to forget every other anal experience you've had. He wants to feel your first. Now, we can't remove the feeling, he'll know. We can't make you just act like it's painful, he might try to ask about your true experience. It has to be real. But we still need to make things easier for you, because having a 'first time' anal experience every few days with someone trying to make it as... 'memorable' as possible? That's awful. So we hide **** behaviors by training them into you."

Veronica still listened, meditating through the pain.

"So you don't get to avoid the pain. But you do get to be comfortable with what it feels like to push through it. Even if your memory of the anal sex is removed, only the most precise of commands will also remove the *skill of acclimating* that you gain from this experience. I can command you to throat a dick that's been in your ass, sure - I can even command you to be disgusted by it. But I wouldn't think to account for how your sense of disgust has been decreased overall through conditioning. So you see - subconscious advantages are the most likely to survive."

Veronica started to breathe through the pain, trying to speak. It came out in little squeaks as her ass was bounced and she was pushed a little forward by John's thrusts with every syllable. "Why not... aaaah.... master.... oooh... change this slut's... subconscious directly? Oh FUCK.... ooooh..."

John nodded. "Some try, but it really doesn't work. For one, I really don't know what's going on in your head. Are you meditating, getting better with pain in general, learning to live with it, or something else? All of the above, as a mix? How do I even go about telling you to become something when I don't know what you need to become? More to the point - how do I change you without changing you so much that Veronica is functionally gone? If I overwrite the wrong subconscious impulse, maybe that sets of a chain reaction that erases... you? It's hard to rewire a Gibbering Mouther, because there's usually almost nothing left there at all. What if I did that to you *accidentally*?"

"You'd.... oooooh.... Master would effectively have killed his favorite slut. She... nnnnng... would be someone else now. The original... gone forever. Dead."

"Yeah. Exactly. So you focus while I keep fucking you. Do what you need to do to adjust. Because I'm going to fuck your ass until I cum, for your own safety. And I'm not super close - we've got a ways to go. It will be painful, but remember that you can't actually be injured seriously anymore. If your ass starts to bleed it will heal almost immediately. Just get used to the feeling, and remember that's all it is - just a feeling. It's not scary, not dangerous to you."

Veronica grimaced. She really wished he'd led with that. She could do this, then. Just like getting an IUD inserted or something - necessary pain. She did her best to relax, settling into position. Her feet still twitched a bit, but she kept her hands gripped the sides of her ass, pulling as much meat aside as she could.

The fire raged in her asshole as John pumped in and out. Occasionally, she might whimper or yelp, but she tried to focus. Meditate. This was a skill she could learn.