Investigation [Lore Dump]

Lisa slowly turns her gaze to you, still smiling. "What do you mean?"

"Well..." you say, "You're going to work today, right? What about me? It's the holidays, so I don't have to go to school or anything."

"Actually, I was thinking of working from home today." Lisa strokes your cheek lovingly. "There isn't much for me to do at the office these days anyway."

"That's awesome!" You cheer up immediately. "We can stay at home and spend the day together!"

"My thoughts exactly," Lisa says, leaning forward to give you a quick peck on the lips. "Now, why don't you go take a shower and I'll join you in a moment?"

"Sounds good," you say, rising from the bed. You stretch your arms and legs, feeling them ache pleasantly from the workout your mother gave you. After giving her a big hug and a kiss, you head to the bathroom, where you turn on the water and step inside. The warm water feels great on your skin, washing away the sweat and cum that accumulated during your morning activities. You can't help but giggle happily, recalling the feeling of your mom's cock in your ass.

After a couple of minutes, Lisa enters the bathroom, completely naked. She pulls back the shower curtain, looking at your naked body with blatant lust.

"Good Sir, mind if I joined you?" she asks, her voice husky.

"I would like that very much, Milady," you reply, trying to sound formal. "Saving water is very important in times like these."

"So it is. So it is."

She smiles at you and steps into the bath, closing the curtain behind her. The two of you press against each other, standing under the stream and kissing passionately. Her hands slide down your back and onto your butt, squeezing it gently. Your hands roam her body, caressing her breasts, stomach, and hips. You press your body against her chest, enjoying the sensation of her soft tits against your chest. Her hands reach down to your ass and you moan into her mouth as she squeezes and gropes it.

"Mmmmmm," she purrs, "Your ass is so cute and bouncy, Sir. It's almost as if it's made for fucking."

"Maybe it is, Milady," you whisper back, nibbling her ear. "Put it to the test immediately."

She chuckles at that. But then she stops, her hands resting on your ass. "Actually..." she murmurs, her voice suddenly serious.

"Yes, Milady?" you ask, looking at her.

"Doug, hold on a second. Is your ass bigger than it was yesterday?"

You glance down at your butt, then back at her. "Uhm, yeah. Maybe? You tell me."

"Hm." She looks down at your ass, her eyes narrowing. "Yeah, I think it is. This is getting weird."

"Weird how?" you ask, confused. "What do you mean?"

"Doug, our bodies are changing, aren't they?" She runs her hand along your ass, feeling its size. "Yeah, there's no doubt about that. I can feel it. Don't you think that's odd?"

"Well," you say, "I haven't really thought about it. Maybe it's just a side effect of all the sex we're having?"

"I've never heard of any side effects like that," Lisa says, frowning. "Not even in stories. This is different. What's going on?"

"Okay," you say slowly, "Let's see. How about this? I'll have a look around online and see if I find anything about it. How does that sound?"

"Good," Lisa says. "I'll go work on my computer while you do that."

With the mood killed, you finish up your shower and dry yourselves off. Once you're dressed, you head to the living room and sit down on the sofa, open your laptop, and start your research. You type in various terms related to your situation, trying to find some information on the internet. It takes you a couple of hours, but you eventually find something that has parallels to your own situation. It's in an old post by an anonymous user in an obscure forum.

It describes waking up in the morning after sex, and finding oneself to reek absolutely horrendous. Only after a shower would one then notice how they felt refreshed and full of energy. The author theorizes that the smell would come from the impurities that their body had purged from its system through all pores, although your case seems to be considerably worse.

This makes you peak up, remembering the scene in your and your mother's beds all too vividly.

The post theorizes how there exists a certain amount of compatibility between a man and a woman. Through physical contact, in particular sex, that compatibility would change them, physically and mentally, to make them better fit each other. The author points out that this might explain things like married people slowly becoming more similar over time.

They go on to speculate that, in theory, two people can be compatible beyond the usual limits. This would lead to more drastic changes, over a shorter period of time. There is no explicit statement that this happened to the author, but you feel like the parallels are too obvious for it to be a coincidence.

The post lists several things that could indicate one's compatibility level with a partner. There's a physical change in appearance, such as getting a larger or smaller butt, a larger or smaller chest, wider hips, a smaller waist, and a much larger penis. Body hair changes too, becoming either very sparse or completely gone. There is also a mental change: A person's sexual needs increase dramatically, which manifests as a stronger desire for sexual activity. A person's thoughts would tend to center around sex, and the libido becomes stronger, especially in the context of sexual activity with one's partner.

After you read the post, you see that it's been posted 16 years ago. The account is anonymous and the forum itself long dead. You decide to save the post on your computer, since it seems like it might come in handy later. You also bookmark it, shut your laptop, and join Lisa in her office. It's an odd sight, seeing her completely naked in this business-like environment.

"Hey mom," you say, closing the door behind you. "I found something."

"Oh?" She turns to look at you, her eyes lighting up. "What did you find?"

"Apparently there's this thing called 'compatibility'," you explain. "More precisely, there's the concept of compatibility between lovers."

"Really?" She leans back in her chair, staring at you. "How does that work?"

"Well, there's a bunch of factors involved," you explain, "but basically the more compatible two persons are, the more their bodies change when they are together. Like, my butt got bigger and your cock got bigger, among other things. And I think we're not just compatible - we're really compatible."

Lisa nods, rubbing her chin thoughtfully. "I see. That makes sense, I suppose. It's still a little weird though, I've never heard of this."

"Yeah," you say. "I guess it's a pretty rare thing."

"Mmmmm, okay. I think I'm done with work for today. Let's investigate this further."

"Sure," you say. "How do we start?"

"Well, I was thinking," Lisa says, "maybe we should check our bodies and see if anything else has changed."

"Okay," you say. "Anything in particular you're thinking of?"

"Anything at all," she says. "Any changes you notice could be important."

You go into your living room, where a peculiar checkup takes place. Lisa and you prod and grope each other's bodies, checking for any changes. Your mother's breasts are certainly bigger, and they jiggle wonderfully as she gropes them, but other than that, they don't feel any different. You feel your own ass cheeks, noticing that they are definitely bigger and rounder. The body hair on both your bodies is gone. Her dick and balls have grown again since yesterday, now standing at a proud 16 inches erect. With the highly increased recovery time of her balls, she could easily make a living in the porn industry.

During this checkup, you begin to notice other things. Following up on the scene on the couch table in the living room, where your mother had your legs bent all the way back next to your head, you discover that your legs have indeed become freakishly flexible, to the point where you can just put your feet behind your head without issue, locking you in a full plow pose. As you're folded up like that, Lisa only manages by the skin of her teeth to not ravage you there and then.

Following up on your unnatural aptitude for deepthroating, you're shocked to find out that you can hold your breath for 10 minutes. Thinking back, it explains how some of your recreational activities were possible. And thinking forward, your naughty mind is running wild with possibilities this opens - and so is Lisa's, you're pretty sure.

You spend the rest of the morning testing and prodding each other, enjoying the sensation of your hands on each other's bodies. But even though you keep checking, you don't notice any new changes.

"I wonder if that is the end of the road," you murmur, lying on the couch, your head resting on Lisa's chest.

"Me too," Lisa responds, running her fingers through your hair. "Who can say? But I am excited to find out where it all leads."

"So, nothing actually changes, then." You look up at her, admiring her lovely face. "Just that your butt slut boy has a big and round ass now. And that your dick is somewhere in the upper one percent range of all women. And your balls. And everything else."

You think for a moment, then shrug.

"It is what it is."

Lisa kisses you deeply, wrapping her arms around you. "So it is. So it is."