Homology

Ellie closed her eyes as Maud kissed her. Slow and implacable. Building up the pressure like the force of one tectonic plate pushing against another until Ellie gave, her tongue subducting under Maud’s, her breath stolen from her lungs.

Ellie took in a sharp breath as Maud let her go, her cheeks flushed. Maud’s face didn’t show a hint of emotion. Just that same half-lidded, imperturbable expression. As if she were an unstoppable wall of granite more than a mare. So hot.

She wanted to melt into Maud’s forelegs then and there in surrender. But when Maud kissed her again, it was sweeter. Lighter. Her lips traced lightly with a tongue, the soft caress of a hoof on her burning cheek. A break in the kiss, then a resumption, as the hoof moved to the back of her neck and her upper back, rubbing her there gently. When Maud broke the kiss again, Ellie smiled.

“Before we start, I wanted to ask you something.”

“Oh, of course!” Ellie said. “Of course! Anything you want to know.” Though she secretly hoped she wouldn’t be asked too much about the human world.

“I noticed you did the conaming yourself. But usually couples talk it out first. Is that how humans do things?“

“The… ‘conaming’?” Ellie was very much puzzled. “I don’t understand.”

“The name you use for mine.” She pointed a hoof at her crotch. “’Clit’”.

Ellie realized. “Oh. Oh! Yeah, I guess I didn’t ask you before starting to do that…” She grimaced. “Is that bad? I’m sorry.”

“If you did something bad, I would tell you.” Maud said, and Ellie felt admonished. “It’s okay. I would have accepted it.”

“But you shouldn’t have to ‘accept’ anything!” Ellie exclaimed. “It’s your body, it’s not about me. So if you prefer any of the other words…”

“Other words?” Maud blinked. “Like ‘penis’?”

“Yeah…” Ellie tried not to frown, as she hoped that wouldn’t be the case, but maybe thinking that was messed up. “I mean, is that what you prefer?”

“No. It’s a formal, scientific word. It wouldn’t feel right here.”

“I get that!” Ellie agreed, relieved. “So do you prefer one of the informal words, then?”

Maud blinked. “We don’t really have informal words for our genitals.”

“Oh, right!” Ellie had noticed that. No talk of “cocks” or “pussies” in Equestria, unless referring to the animals. It was really nice, actually.

“That’s why couples do the conaming. They agree on the words to use for each other’s bodies. It’s considered an intimate thing.”

“Huh…” Ellie set her jaw as she considered this. “Wow.” She blinked away tears. “That’s just really nice and adorable.”

“You say that a lot about pony things.”

“That’s because it’s true!” Ellie squeezed Maud’s cheek with a hand, distorting the lack of expression on her face. “A lot of things are nice and adorable here. Things that I wish humans did back in my world.” She sighed, and let go of Maud’s face, which bounced back to its expressionless default. “But I want to do this the pony way and not the human way. I want to talk it out. You said you wanted to ask me something?”

“Yes.” Maud said. “‘Clit’ is short for ‘clitoris’, right?”

“Yeah, that’s right!”

“But that’s what you have, not me.”

“I guess, like, scientifically…” Ellie conceded. “But I just personally like to expand the word to account for the homology.”

“Homology?” Maud asked.

“Yeah!” Ellie said. “It’s the noun form of the root adjective ‘homologous’, which comes from the Greek ‘homologos’. “’Homo’ for ‘same’, ‘logos’ for ‘mind’, thus ‘agreeing’.”

Maud blinked. “Greek? Do you mean Pony Greek?”

“Uh… sure?”

“It sounds weird when you shorten it.”

Ellie chuckled. “I guess! But yeah. Homology. It’s the similarity between different biological structures. My clit and yours are homologous. Well, technically my clit and the head of yours…” Ellie smirked. “But the rest of my vulva and the rest of your genitals, they’re both made of the same tissues, more or less. They were the exact same structure at some point in our fetal development, and they only turned out differently because a different chromosomal key was turned.“

“Really?” Maud asked in a way that was just as monotone as everything else she said, but clearly sarcastic.

“Yeah, isn’t that neat?”

“I was being sarcastic. I was pointing out that it wasn’t true.”

“Really?” Ellie had been pretty sure of this fact, but she was not an expert in this field and Maud objected so definitively that it caused her to second-guess herself. “I could’ve sworn that’s how it worked…”

“We’re different species.” Maud pointed out. “Our fetal developments were probably pretty divergent from the beginning.”

“Oh, right… Yeah… That…” Ellie cringed. “It’s really weird how quickly I got used to the whole not-the-same-species thing…” She thought for a second and smiled, finding her footing. “But homology also applies across species too, you know!”

She snuggled up closer to Maud.

“I mean, it really doesn’t stop there! Our lips”—she pecked Maud on the lips—“our noses”—she touched noses with her—“our ears”—she touched one of Maud’s ears, which twitched at her adorably—“our eyes”—she stared into her eyes—”they’re all structured very similarly, aren’t they?”

“Yes.” Maud said.

“They’re homologous, too.” Ellie smiled. “I mean, we’re both mammals. So if you go far back up the evolutionary tree enough, all our parts were once the same. They just took different shapes.“ She took a forehoof in her hand, and felt the nail with the nail of one of her fingers.

“It’s just nice, you know? Thinking of us as not so different, really. Thinking of your clit as being like mine, only bigger.” She glanced down, drinking in the view. “A lot bigger…”

“It sounds like you’re into being the same as you.“

“Yeah!” Ellie agreed. “I mean, I’ve had this problem for a long time! Like, it’s hard for me to tell sometimes whether or not I’m attracted to someone or I want to be like them or both. To be honest, it makes me worry that my ideal partner is a clone of myself.“ She shook her head. “No, that would be a total disaster, as hot as it’d be. We’d just reinforce each other’s bad habits. An ideal partner would be someone who’s similar to me, but different enough to make me better.“ She smiled, suppressing a giggle at just how silly the word still felt to her. “Or somepony, I guess.”

Maud looked at her, and smiled slightly. “We are pretty similar.” She looked down at herself, and Ellie looked down with her. “Clit.” Maud said. She touched herself with a hoof, which made Ellie more than a bit excited. “I like it.”

“Oh, you’re not just saying that, right?”

“No.” Maud said. “I like it. It’s short. It feels good to say.” She moved her hoof to Ellie’s crotch, which made her shudder. “It’s nice that we both have one.” She faced up to look Ellie in the eyes. “It’s pretty. Like you.”

Ellie bit her lip, her cheeks brightening.

“It’s not fair how good you are at that.”

Maud did not respond to that, and just moved her hoof to Ellie’s side, gently stroking her.

“There’s something else I was wondering.” Maud said. “Why you use ‘she’ and ‘her’ to describe my clit.”

“Oh! Yeah…” Ellie brightened even more. “I mean, I do that for mine, too… It just feels more personable… And, uh…” Ellie darted her eyes. “I like it…”

“Oh.” Maud looked at her. “Speaking of your clit. She felt really good on my tongue this morning.”

Ellie turned a bright red and squeezed her thighs together at that.

“You really do like that.” Maud cupped a hoof on her cheek to feel the heat radiating off of it. “Interesting.”

“Yeah…” Ellie managed. “I think it’s an extension of, uh, how I like to be referred to in the third person, too, sometimes. I really have no idea why…” She groaned. “Maybe I have more in common with that homeless magician unicorn than I thought.“

“Trixie?” Maud asked, and Ellie nodded. “Not really. She’s a lot more passive in bed than you are. Not that that was a bad thing, the way she did it.”

Ellie’s eyes widened at that. She studied Maud’s face, but it held the same expression as ever.

“She was a terrible fieldhoof back at the rock farm. But I did her share of the work so my parents wouldn’t fire her. I liked having her around. She was almost as good in bed as she was bad at rock farming.”

Ellie sighed.

“I thought I was starting to get the hang of telling when you’re messing with me, but I guess I still have a lot to learn.”

Maud winked. Ellie thought for a second, smiled devilishly, and began to stroke Maud’s chest.

“You know, I can actually kind of picture it. Like, I really like how big her ego is and support her in her life choices 100% but… It does make imagining you two together way hotter.”

“Really?” Maud said, monotone.

“Yes.” Ellie practically salivated. “She’d come at you just so haughty and commanding at first. Like you were beneath her. But you’d be just like the rock that’s your cutie mark. An immovable object. Always there. Never cowering to her demands, never showing her anything other than kindness. She’d wear herself down on you, until she finally broke. She’d open herself up to you about why she keeps up this persona to keep everypony away. Be really emotionally vulnerable. Ugh.” Ellie licked her lips. “Emotional vulnerability is so hot.”

“Yes.” Maud agreed. “All of that is exactly what would happen. Hypothetically.”

Ellie studied Maud’s face. She still couldn’t tell. She smirked.

“And oof, I can just picture it. Trixie on all fours on your bed.” A pretty normal thing for ponies to be, she just realized. “You on top, chest on her back, so you can feel her body as you move as your face blushes with effort. Trixie taking all of you, sweating and moaning and biting your sheets…”

Maud’s expression was blank as always, but a slight tinge of red on her cheeks betrayed her true reaction. Of course, Ellie still couldn’t tell if Maud was remembering or imagining…

Not that it mattered. The shoe was on the other foot now. Or other hoof. Whatever. She began to gently stroke the coat of Maud’s chest with her fingertips.

“Say, I was thinking…” She smiled at her. “Maybe I could try something that’s probably a dumb and bad idea?”

“An Ellie idea?” Maud asked, without skipping a beat. Ellie laughed.

“Yeah! I just want to try it. Some math-based foreplay.”

Maud did not respond, and just looked at Ellie with her trademark half-lidded expression. That was all she needed to say.

“You know!” Ellie insisted. “Like the tectonic plate roleplay we did this morning, only my version of it. I mean, I didn’t really get half of the references you made then, but I still had fun.”

“I was trying to keep things non-technical.” Maud said. “But I guess that’s fair.”

“Oh, no!” Ellie took Maud’s hoof in her hand. “Sex shouldn’t be transactional or anything, I’m sorry I worded it that way. I mean, to be honest it’s just me trying out a dumb and bad idea I had based off a dumb math pun involving the word ‘homology’. Never mind.”

“No.” Maud said. “Your ideas aren’t dumb and bad. I’m sorry I joked about that.” Ellie melted into a smile. Maud continued. “They’re weird. I like how weird you are. I want to try it.”

Ellie kissed her hoof gratefully. “I want to say that you won’t regret it, but I can’t really promise that at all. I’m sorry.”

“It’s okay.” Maud said. “But if it doesn’t work, can we go back to the Trixie thing?”

“Okay, fine!” Ellie laughed. She kissed Maud, and sat up to begin.