Advanced Anatomy, by Twilight Sparkle

Sonata poked her head into Twilight's house. "Hey Goggles, you in here?” She shouted, squinting in the low light. Geeze, and Adagio says that I'm dim.

After awhile she heard a stirring coming from the back of the house. "I wasn't expecting company,” Twilight yawned as she walked into the living room, her hair a mess and rubbing her eyes. "You'll have to forgive the mess.”

"To be honest, I couldn't really tell in this lighting,” Sonata said before she hit her shin on Twilight's coffee table, "Ow.”

Coffee tables are dark, evil things that attack her poor unsuspecting legs, with malicious frequency.

"You okay?” Twilight asked sleepily. She'd probably care more if she was good and awake, but she wasn't.

Although, Sonata probably didn't know she was lucky Twilight bothered to be modest and put on her nightgown at all.

"Yes… just had a run in with my old nemesis,” She growled, glaring at the barely visible table.

"My coffee table?” Twilight asked, somewhat confused, but also intrigued.

"Not your's specifically, it's whole species has it out for me,” Sonata grumbled, rubbing her shin.

"Ummm… it's an inanimate object so it can't have a grudge against you, nor do I think furniture is classified by species, per say. I'm not really sure what it is categorized by actually, now that we're on the topic, I'll have to look into that later. So… uh… what did you come here for?” Twilight blinked as she looked from Sonata to the coffee table.

"Adagio sent me to come talk to you, something about ‘not understanding social cues.’ She said you might be able to 'enlighten’ me, whatever that's supposed to mean.”

Sonata squints again, trying to get used to the low light.

"But I'm not sure she's ever been to your house, cause you don't seem like you make anything bright,” she said, cocking her head to see if her eyes would soak up more light that way… they didn't.

Twilight stood there, her expression still blank. The weight of her eyelids became increasingly prominent. "I think she wants me to teach you something, is there something she wanted you to ask me?” Twilight asked, her eyebrows raised.

One thing was definite, Twilight wanted to get her out of her house, so she could go back to bed. Without being rude.

"Well, the other day I told Adagio she looked like she was gaining weight which I thought was super weird because she was always so obsessed with her figure then she told me she had a bun in the oven and I was like 'oooh buns’ and ran to the kitchen to see how far along they were and the oven was empty!” Sonata finally took a breath before continuing, "So I told Adagio she was a liar then she pointed to her stomach and everything made sense! She's getting fat because she keeps eating the buns, but when I told her that, she just glared at me, and told me to come ask you about Greg and Nancy? Whoever they are.”

Twilight straightened her glasses, but realized she isn't wearing them yet. "You mean pregnancy, it's when a woman is carrying a baby,” Twilight says, relieved that it was something so easy.

"Huh, I always just called that 'holding',” Sonata said with a shrug. "But I still don't see what this has to do with the missing buns.”

A sliver of dread creeped up Twilight's spine as she realized what she had gotten dragged into. She loved helping others learn, but this… this was going to be a long lesson, and a huge dent in her sleep schedule.

"No, no, no. Pregnancy is what happens before you have a baby. First it is carried in the womb for nine months, then the mother goes into labor, and delivers the infant.”

"Uhhh… No. Babies are delivered by storks. I read about it in a book, and Adagio wouldn't go into labor, she's never worked a hard job in her life,” Sonata said, confused as to why Adagio would send her to see someone who didn't even know that much.

Twilight was glad she wasn't wearing her glasses, because her hand hit her face hard enough to leave a mark. "That's a children's story, so that parents can put off giving their kids 'the talk’ for a few more years,” Twilight sighs, regretting not just going back to bed.

"Ooh, yeah Adagio gave me that ten years ago. I only had to get it twice before it stuck,” Sonata said proudly. "But what does peeing in public have to do with babies?”

"It doesn't,” Twilight stated flatly, her eyes rolling on their own. "That isn't the same talk as the one I'm talking about. Didn't you ever go to sexual education?” She asked, becoming genuinely concerned about Sonata’s naivety.

"I never really went to school, except that one month, that was fun.” She grinned.

That explains... so much, Twilight thought to herself.

"But Aria did try to teach me about that sex thing once. I think it was called ‘Unreal Sex Fourteen.’ Why we started on fourteen I don't know, but I was clearly missing something, because they were wrestling differently than they do on T.V. for one I'm pretty sure biting isn't allowed.” Sonata cocked her head, still confused by that.

"They were performing sexual intercourse, not wrestling… well probably not wrestling, you never know when it comes to pornography.”

"So this 'sexual obstacle-course’, is it like the Olympics?” Sonata asked, having more questions with each new answer.

"No, it's done for reproductive purposes… and recreation,” Twilight blurted out that last bit quickly.

"So if it's not wrestling, what is sex exactly?” Sonata scratches her head. Twilight yawned, grabbing a book off of one of her many shelves, and flipped it open.

"Sex is when two people, let's stick with a man and a woman for simplicity's sake pleasure each other's genitals.” Twilight pointed to a diagram of a man. “The male genitalia is the penis,” she said, her finger over the man's crotch.

"Ummm, Twilight, that's a dick,” Sonata said, nodding with certainty. “It looks a little different from the ones Aria used to draw on Adagio's forehead, but that is without a doubt a dick.”

"Well, technically yes, that is a commonly accepted derogatory, but it is called a penis as well. So during intercourse, the male puts his penis into the female's vagina, then… they… uh, move around a bit, and semen comes out, and fertilizes the female's eggs,” Twilight blushed hard

"I am so lost right now, what do sailors, and breakfast have to do with sex?”

"Semen, not sea men. It is a fluid that comes out of the penis during ejaculation to carry the male's sperm into the female's womb, where one of her eggs will be fertilized, and grow into a freaking baby!” She panted as she caught her breath from yelling that.

"Okay, I think I've got it. You said that sex could happen between any two people right? So how would two girls have sex?” Sonata asked with a wink.