Mr. Cake was taking his sweet time flopping around on top of her.
There was a lot of things Rarity didn’t mind about Mr. Cake. She didn’t mind that he insisted on taking her on the kitchen table, her legs up in the air. She didn’t mind how he had a thing about cumming on her belly. She didn’t even mind that he kept calling her Pinkie while he was fucking her. She just wished he would get on with it. She had other things to do today.
Finally, he started his usual grunting. “Oh Pinkie, oh baby, I’m coming, I’m coming.” He pulled out his long dick and slapped it on her belly. That was one of the other things Rarity didn’t mind about him. He was very well endowed. He came all over her belly, just like usual. He got down off of her onto his hooves, and turned around, almost ashamed for some reason.

“Alright, Mr. Cake,” Rarity said. “I’ll see you next week? Same time?”

“Sounds good, Miss Rarity,” he answered.

“Say hello to Cup for me, darling,” she called after him.

“Will do,” he called back cheerfully.

She used a dishrag to wipe the cum from her belly. She used to same to wipe up the kitchen floor where it had dripped from his flaccid dick as he left. She turned to throw it in the laundry out back, but stopped when she noticed Sweetie Belle standing in the doorway. Rarity jumped a foot into the air.

“Oh my gosh!” Rarity said. “How long have you been standing there?” Sweetie Belle was looking at her with eyes as big as saucers.

“Since about the time he started calling you Pinkie,” she answered.

“But...But that was during the foreplay!”

“Is that what sucking on his weiner is called? Sis, can I ask you a question?”

“Oh, oh my goodness. This is so embarrassing.” Rarity ran around her kitchen frantically. “Oh, of course, Sweetie, I’m so sorry about this. You must be filled with questions, of course. Please, sit down at the table and I’ll explain. Oh dear.” Rarity double checked to make sure she had wiped everything up.

They both sat down at the table. Rarity got back up, put the bowl of fruit from the counter back on the table, spent some time centering it. Then she sat back down. She fidgeted with her hooves for a bit. She tried to speak but stumbled. She tried to collect her thoughts. Finally, “Sweetie Belle... when two ponies love each other, really love each other... a boy pony and a girl pony... they go off somewhere where they can be alone. The boy pony has a thing called a penis. It engorges with blood, becoming long and hard...”

“Well I know what humping is,” Sweetie Belle said.

“Oh,” said Rarity. “Well then what was it you wanted to ask?”

“Why did you just lie there like that?”

“Whatever do you mean?”

“You were just lying flat on your back and hardly did a thing. Other ponies say that Rarity will hump anything on legs. That you’re a real sexpot. That all the stallions come to you and that must mean you’re a real hot piece of butt. A sexual dynamo.”

“Sweetie Belle,” Rarity said, hurt. “I can’t believe you said that. Who on earth would tell you such things?”

“Mom.”

“Oh dear.”

“So I can’t tell how a pony can be a sexpot and just lie there like that. It can’t be that easy.”

“Oh, it’s not. There’s much more to it than that,” Rarity said. “Wait a minute, why are you even asking these questions?”

“Well,” said Sweetie Belle. “As you know I’ve been trying to find my cutie mark, and I’ve been experimenting with all sorts of things. I want to be just like you, big sis. But I tried sewing, and I wasn’t any good at it. So I thought that maybe I could try to be the world’s greatest lover. Just like you.”

“Oh, Sweetie,” said Rarity. “You can’t be a sexpot. You’re much too young. You’re still a virgin.”

“How old were you when you lost your virginity?” Sweetie Belle asked.

“Oh, now there’s a story and a half,” Rarity said. “It was the night that I got my cutie mark. You know what they say, ‘mark on the flank; sit, spin and spank.’ Anyway, I had just...” Rarity noticed Sweetie Belle looking up at her with big dark eyes. They were starting to water. “Oh, Sweetie, what’s the matter now?”

“You were younger than me when you got your cutie mark,” she sniffed. “And now you say I’m not old enough to be a slut like you. It’s so unfair.” She pouted.

Sweetie Belle couldn’t whine as well as Rarity, but it warmed Rarity’s heart to watch her try. “I’ll tell you what, Sweetie Belle. You’re right. It’s not fair of me. It’s a true double-standard. So listen, I can’t promise I’ll get you your cutie mark for you. But at least I can teach you everything I know about the sexual arts.”

“Do you mean it?”

“It’s the least I can do.”

“Yeah!” shouted Sweetie Belle as she jumped up from the table. “Cutie Mark Crusader Sluts! Cutie Mark Crusader Sluts!” She ran around the kitchen floor in a tight little circle.

“Don’t get too excited,” Rarity warned.

“I’m gonna lose my virginity! I’m going to be a great lover! I’m going to lose my virgirinty! I’m going to be a great lover!” Sweetie Belle started trotting out the kitchen door. Suddenly, she felt a short, sharp pain stabbing her in the rear. Her hind legs lifted off the floor for a second, and then dropped back down. Sweetie Belle turned around in surprise. Rarity was wiping a small spot of blood from the tip of her horn with a soggy dish rag.

“What did you just...” Sweetie Belle tried to ask.

“Everybody loses their virginity, darling,” Rarity said. “There’s no special talent behind that. Becoming a great lover is something else entirely.”

“Did you just...”

“Can you imagine if we had to drag that out all day? Goodness. Now we can just move on.”

“I can’t believe you just...”

“You can thank me later, now let’s go. Sunlight is burning.”

Sweetie Belle found herself hiding behind a bush with Rarity. Rarity was wearing a bright pink pith helmet and a pair of binoculars that looked more like opera glasses, complete with handle. They were snooping on some foals of Sweetie Belle’s own age. She didn’t understand why.

“Alright, Sweetie,” Rarity explained “Your first lesson in love is how to pick your suitor. You can just go running off for a roll in the hay with just any mule that comes trotting along. That will come later, after you get bored. You have to develop a certain kind of reputation first. So the first thing you need is some discriminating taste. Now, look through these glasses, and tell me who you think the best lover is.

Sweetie Belle looked through the binoculars. “Hmm, the only colts I can see are Snips and Snails. I don’t like them very much.”

“Can’t say I blame you.”

“But if I had to pick, I suppose I’d pick Snails. He’s the lesser of two evils. He’s kind of cute in a stupid sort of way. He’s also tall and skinny. Does that mean he has a bigger weiner?”

“Hmm. If you assume ‘weiner’ size is proportional to body frame, and it usually is, you’d be right. And it turns out you are. Now that is certainly a thing that matters when finding a lover, but in this case there’s a drawback.

“Oh?”

“You see, Snails has a heart of gold. He’d fall madly in love with you. He’d go to the ends of the earth for you, and he’d be faithful to you. Then he’d get all whiny and cry-baby like when you wouldn’t do the same. Just a lot of lovey dovey nonsense. Way more drama than it’s worth.”

“Oh. Well then that leaves... Snips. Ew. He’s short and round. You were talking about weiners being proportional?”

“Yes,” said Rarity. “Short and round. Not a good combination. Plus he had a flatulence problem and a hair trigger.”

“How do you know...”

“Yes, Sweetie Belle, when there’s a shortage of stallions that fit your qualifications, you must turn to the fillies.”

“The fillies? You mean like Diamond Tiara and Silver Spoon?”

“That’s a fine guess. Both are beautiful, both are refined, most importantly both are rich. When in doubt, always sleep with the rich. But in this case your guess would turn out to be wrong. Silver Spoon is frigid, and Diamond Tiara is being molested by her father. That’s an emotional Pandora’s box you don’t want to open.”

“How do you know...”

“No, Sweetie Belle, the best lover here before you is the last one you’d ever suspect.”

“But the only other one here is... Twist.”

“Yes, she doesn’t look much, and that voice is atrocious. But she’s willing to try anything and she’s got a cooch that just don’t quit,” Rarity said.

“How do you know all of this stuff?”

“Um... don’t ask.”

“Oh dear.”

Rarity unlocked the padlock to one of the spare bedrooms upstairs at her boutique.

“Well, Sweetie Belle,” Rarity said. “If you’re going to be a great lover, you first need to learn to love yourself.” Rarity swung open the door. Sweetie Belle’s eyes boggled. It was Rarity’s toy collection. She had everything out, cleaned, polished, and set on display. Every color of the rainbow was represented, as well as a few Sweetie Belle had never seen before.

“What’s that one?” Sweetie Belle pointed.

It was in a walk-in closet. In fact, it took up the entire walk-in closet. It was one massive steel structure that appeared to have been welded in place, because there was no way it could have fit through the door. There was some kind of platform in the middle of the thing for a pony to lie on. At least if you could call it laying, it would be very awkward. The platform was surrounded at various angles by three enormous plastic colorful dongs, perhaps a foot long, mounted on movable armature. It appeared to be powered by a small diesel engine.

“That? Oh, Sweetie, you’re a bit too young for that.”

“But I thought I was old enough for sex now?”

“No, I mean you’re literally not old enough. You need to go down to the City Hall to get a license to operate that class of machinery.”

“Oh,” said Sweetie Belle.

“Nevermind,” said Rarity. “There are plenty of toys here that do the job just fine. We’ve got dildos. Strapon dildos. Double-headed dildos. Fleshlights. Double-ended fleshlights. Whips. Chains. Ben-wa balls. Ball gags. Butt plugs...”

“Butt plugs?” interrupted Sweetie Belle. “Why would anybody want to plug up their butt? You couldn’t eat anything or you’d just fill up with poop. You’d just get bigger and bigger and...”

“No, it doesn’t work that way. Here, let me show you.” Rarity found one that suited her. With one fluid motion, she smacked her rear against the ground and brought it back up again. She turned around to present herself to Sweetie Belle. Sweetie Belle was confused. Rarity had two tails. A purple one above, her natural tail, a black one just underneath.
“This one has a synthetic horse tail,” Rarity explained. She started shaking her ass, both tails started spinning clockwise. “It’s just a bit kinky. That’s the thing about buttplugs. They can please your partner as much as yourself.” The tails started spinning counter-clockwise.

“Oh,” said Sweetie Belle.

She watched as Rarity somehow started spinning the purple clockwise, and the black counterclockwise. Then she switched and did the opposite. Sweetie Belle felt a bit dizzy, so she lied down on the floor to ease her stomach. She happened to peer under the spare bed and found a toy that caught her eye. It was a bit smaller than most of the other dildos.

She grabbed it, put it behind her, and slowly, easily started working it in. It slid in without too much discomfort.

“There,” she exclaimed. “I did it! I did it!”

“Turn on the vibrator, Sweetie,” Rarity said.
Sweetie reached back behind herself and turned the knob at the end. A circle of light appeared on the wall behind her. “I don’t think it’s working,” she said. “Maybe the batteries are dead.”

“Oh, the batteries are fine,” Rarity said.

“How can you tell?”

“You’re fucking my flash light, Sweetie Belle.”

“What? Really?” She turned around to look, shining the light directly in Rarity’s eye. Still not seeing it, Sweetie Belle started spinning around in circles struggling to look. The light danced all across the room as she spun. Not a bad effect, Rarity thought, I should tell Scratch. Her club could hire erotic dancers and put on a light show.

Rarity got home to the boutique with a saddlebag full of magazines in non-descript brown paper bags. She had just been to the adult book store. The lessons weren’t going at all like she had planned earlier. She opened the door to find Sweetie Belle hunched over a desk in the corner, reading a book.

“Sweetie,” Rarity called. “I picked up some reading material for you.”

“Really?” she called back. “I was just at the library getting a book about sex myself.”

“Twilight gave you a book about sex?”

“No, she wasn’t there. Spike gave it to me. He didn’t even make me check it out.”

“You didn’t return him any favors, did you?”

“No, I just flirted with him then he gave me what I wanted. Just like you taught.”

“Good girl. A book on sex from the library? How quaint. Are you learning all the proper medical terms and definitions?”

“It’s not that kind of book,” Sweetie Belle said, “It’s a book about sex magic. It’s called the Kama Trotra.”

“Sex magic?” Rarity’s ears perked up. “I didn’t know there was such a thing.”

“Oh sure, I can’t do all these spells, but I’ve already done some of them.” Sweetie Belle looked up from the desk and turned around. Her little three inch blunt stub of a horn had grown into an eighteen inch ribbed shaft, crowned by a large knobbed head.”

“Dear God,” screamed Rarity, “what is that thing?”

“Oh that?” Sweetie Belle asked. “That’s my new humping horn! I’m gonna hump you with it!”

“You most certainly are not!”

“The book said you’d say that.”

Rarity turned around and tried to flee.

“The book said you’d try to get away.”

Sweetie Belle’s horn began to glow. Rarity levitated up into the air. Her legs were flailing. She slowly lowered, her ass end up over the back of the couch. Her tail lifted into the air, exposing herself. “Sweetie!” Rarity screamed, “What are you doing?”

“The book says I’m supposed to use the magic words. ‘Womun!’” Sweetie Belle imitated a gruff stallion’s voice.

“Immagonnagetchercooter!”

Sweetie Belle lowered her horn and rammed it into Rarity’s pussy as far as it would go. Which was most of the length of it. She slid it back and forth.

“No!” screamed Rarity. “No, stop! Please! Stop! You’re going to be in big trouble! No! Stop! Faster. Just a little bit slower. There, perfect. No! Please, stop!”

“And now for the orgasm spell”

“Orgasm spell?”

“Immarichdoctorwoodulikesumchoklat.”

Light blazed from the horn, blinding them both. Their hips started vibrating and quivering. They screamed as the both came simultaneously. Sweetie Belle’s horn fell out, and they both tumbled to the floor.

Sweetie Belle was the first to pick herself up. “Did I do it?” she asked. “Did I finally get my cutie mark?” She started spinning around trying to see her own flank. Rarity peeked up over the edge of the couch. She was clobbered by the knob of Sweetie Belle’s swinging mace-like horn.

When she came to, the first thing Rarity saw was Sweetie Belle’s sad face. Her horn had returned to normal.

“Oh sis, are you OK? How much do you remember?”

“I remember... I remember... I remember chocolate.”

“Oh, Rarity. I’m so disappointed. It didn’t work. My flank is still blank.”

“Oh, darling. It’s alright. Maybe you’ll be better at something else. Maybe being a sexpot just isn’t your thing. Besides, I’m not sure what kind of cutie mark you’d get for a talent like that any way, and if you would even want it.”

“Well, OK,” Sweetie Belle said. “I’m going to go see what Applebloom and Scootaloo are up to. Maybe they’ve got some ideas.”

“That sounds fine. Have fun playing.”

“We will,” Sweetie Belle called back as she cantered out the door.

“Now, where did I put my reading glasses?” Rarity said to herself.