Can't Say 'No'

by Yukito

Rating: mature
Tags: Sex, Pipp Petals, My Little Pony: A New Generation, Porn, Zipp Storm
Length: 2492

A whole day where Zipp has to say 'Yes' to ANYTHING she's asked? C'mon Hasbro, you're making this too easy

Zipp has accepted the challenge of saying 'Yes' to anything she is asked to do for an entire day. ANYTHING. Pipp decides to take full advantage of the emphasis on the word 'anything'.

Contains: Yuri, incest, dubious consent, princesst, low-hanging fruit

Published 2022-08-17 21:50:03 UTC
Last updated 2022-08-17 21:50:03 UTC

Can't Say 'No'

Author's Note

So I know the episode actually ends with the sun setting and they're outta time, but that doesn't fit with the narrative I've spun here, so I'm gonna have to ask you to ignore that and act like the episode ended different, m'kay?

Can't Say 'No'

“Wow, I can’t believe we got everything done all in one day.” Sunny checked off the final item on the list, and then looked over to the sun, nearly ready to start setting.

“I gotta admit, I had a real blast today,” Zipp said, and then looked up at the multi-coloured mohawk she was now sporting. “But uh, this is gonna wash out, right? Not that it isn’t cool or anything, just can’t imagine Mum seeing this and not freaking out.”

“Yeah, she’s already seen the pic I posted, and she is not happy,” Pipp said, snickering as she showed her phone to Zipp.

‘Zephyrina Storm, what have you done?!’

‘Are you becoming a delinquent?’

‘Where did I go wrong?’

‘Is this that new-fangled rock-and-roll?’

‘Awww, how cute! <3’

‘Sorry, wrong conversation’

‘Anyway, that better be gone by my next visit! Love u x’

“Sheesh, talk about overreacting,” Zipp laughed.

“We’d better wash that out and send her a new pic now, before she starts-” Pipp’s phone began to ring, and she sighed. “Calling us.”

“You guys go on ahead,” Zipp said. “We’ll catch up.”

Sunny and Izzy said their farewells and headed back to the lighthouse, with Hitch heading towards the Sherrif’s Office to end the day. Zipp and Pipp flew to Mane Melody. As they entered, Pipp drew the curtains, and then subtly locked the door. “Hey, Zipp, you know it’s technically still your Yes Day.”

“Yeah, I guess, but I thought we already did everything you guys wanted.”

“Everything they all wanted.” Pipp approached her sister, and asked, “Do you remember that time I asked you about sex, and then asked if we could-”

Zipp’s face immediately turned red, and she started backing away. “Oh, no, no! We already went over this! It’s not happening!”

“Ziiiiiiiipp, don’t forget, it’s your Yes Daaaaaay.”

Zipp felt herself hit a wall, and Pipp closed the distance, looking up at her through lidded eyes. Zipp had to raise her head as Pipp leaned too close for comfort. “We’re sisters, Pipp.”

“Exactly. Who better to give my first time to than the pony I love and look up to the most?”

“I love you too, but not in that way!”

Pipp pouted, tears welling in her eyes. “Oh, you can be so cruel!”

“That’s not gonna work.”

Pipp returned to her flirtatious gaze, bringing a hoof to Zipp’s chest. “Then I’ll just take the direct approach. Zipp, have sex with me.” Zipp opened her mouth to answer, and Pipp quickly added, “It’s your Yes Day.”

Zipp gritted her teeth, her heart pounding as Pipp leaned closer. The strong scent of her shampoo made Zipp feel dizzy, but it also smelled so nice that she wanted to take a deep whiff of it. The rational part of her brain told her, ‘To Hell with this ‘Yes Day’ crap! You can’t fuck your own little sister!’

Unfortunately, it was overshadowed by her pride, which refused to allow her to back out of any challenge she had already accepted, no matter how ridiculous or... weird, it got. "Fiiiiine," Zipp sighed.

Pipp had stars in her eyes, and moved her hoof up to Zipp’s head, pulling her sister down so that their lips could meet. Zipp had to admit that it did feel nice; Pipp seemed to be very good at kissing, knowing just what to do with her tongue, and her lips were so soft and warm.

“We don’t have much time,” Pipp whispered, glancing at a nearby clock, “So let’s get right to it.” Pipp fluttered backwards, pulling Zipp with her, and lay herself down on the ground, shifting so that she and Zipp were in the right position to sixty-nine.

Zipp got the message, but she was reluctant to start. Pipp made the first move and started licking her sister. Zipp moaned at the sudden contact, and her wings gave involuntary flaps. “Hey, don’t make me do all the work,” Pipp said, kicking her hind leg a little to get Zipp’s attention.

Sighing, Zipp spread her sister’s legs and… just stared for a few seconds. She had never seen this part of her sister before, not that she ever had any reason to, and she didn’t really know what to expect, but she didn’t expect it to look so pretty, or smell so inviting. She saw how wet Pipp was, and realised that was all for her. Or, she assumed it was. Maybe hoped?

Another kick from Pipp’s leg told Zipp that her sister was getting impatient, so she leaned down and started licking. She wasn’t really sure what to do, but going by the pleasant sighs that Pipp let out, she must have been doing it right. Pipp continued licking as well.

The shop was now filled with the wet sounds of the two sisters eating each other out, as well as their occasional moans and gasps. Zipp wanted this to be over quickly, so she began playing with Pipp’s clit with her hoof. Pipp threw her head back and practically mewled in pleasure. “You doin’ alright back there?” Zipp teased, despite the situation.

Pipp huffed. “Two can play at that game!” Pipp buried her tongue deep into her sister’s snatch, exploring every inch until she found the spot that made Zipp tremble above her. Once she found that spot, she attacked it relentlessly. Zipp’s own movements became a lot faster, and it became a battle between the sisters to make the other cum first. A battle that Pipp lost, but only by the barest of margins, as when Zipp felt her sister’s first squirts against her face, it pushed her to her own orgasm.

While Zipp pulled her face away quickly, Pipp continued lapping away, drinking Zipp’s juices like she was dying of thirst. After a while, the two finally stopped, and they took a moment to catch their breaths. “Are we done now?” Zipp asked, wiping the cum from her mouth. The grin that Pipp gave told her that they weren’t.

“There’s still time,” Pipp said, pointing to the clock that showed there was still five minutes remaining of Zipp’s Yes Day. Pipp flew over to her desk, producing a key from her mane and using it to open the locked drawer at the top. She pulled out a double-ended strap-on, looking excited as she carried it over to Zipp.

“Why do you have that?”

“Why do you think? I hid it here for just this moment.”

“No, I mean, why do you have it in the first place? You’re not… doin’ it with other mares, are you?”

“Oh? Is that jealousy in your voice, Zipp?”

Zipp averted her eyes. “Hardly. I’m just lookin’ out for my sister, that’s all.”

“Mhmmmm…” Pipp handed the strap-on to Zipp. “Well don’t you worry. I already told you that I’ve been saving my first time for you. That’s why I have this… So you could use it on me when we finally… Anyway, hurry and put it on!”

Zipp groaned, but complied, putting on the strap-on, shuddering as she inserted her own end into her, pushing it all the way. Whilst she was fastening it, Pipp had turned herself around and lay her head down on some pillows, her rear raised and her tail flagged. She was now presenting herself entirely to Zipp, and maybe it was some primal instinct, or just the enticing smell coming from her sister, but Zipp wasted no time in accepting Pipp’s invitation. She positioned the head of the toy against Pipp’s hole, and entered in one swift motion, mounting her sister.

Pipp had to bury her face to muffle her screaming, whilst Zipp had to stop for a moment, her entire body shaking. “Ohhhhhh god, that felt so good!” Zipp said inadvertently. She then noticed Pipp with her head in the pillows, and asked, “Hey, you okay down there?”

“I’m… better than okay,” Pipp said, raising her head and taking a deep breath. Tears rolled down her face, but it wasn’t from any pain or regret. They were tears of joy, and before Zipp could say anything further, Pipp said, “Do it, Zipp. Fuck me, before we run out of time!”

Zipp was surprised to hear such vulgar language coming from her prim and proper younger sister. Pipp was always the ‘good girl’ between the two siblings, and she prided herself on hosting only the most wholesome and family-friendly content. But, although it was unexpected, it was a turn-on, and it definitely achieved Pipp’s goal of making Zipp go faster.

As Zipp rutted her sister like a dog in heat, something came over. She brought a hoof up and smacked it against Pipp’s flank, causing the younger mare to cry out in surprise. “Ya like that, Pipp?” she asked, smacking her sister’s flank again.

"Oh Zipp! T-That's..."

Zipp could both see and feel the effect that it was having on Pipp, the mare getting tighter, and her moans louder. She smacked her again, and Pipp shuddered. “You like your big sister fucking you like a bitch?!”

“Oh god, Zipp!”

“Say it!” Zipp smacked Pipp again, and then again. “Say you like being my bitch!”

“Fuck, Zipp, I love it! Please, don’t stop! That feels so good!” Zipp smacked Pipp’s flank one final time, far harder than all the previous times, and after one more hard thrust, Pipp was sent over the edge, hearts in her eyes as she came for the second time.

Zipp pinned Pipp down and started thrusting harder, turning Pipp’s cries into incomprehensible gibberish, and soon, she came too. She buried the whole length of the strap-on into her sister as she rode out her orgasm, holding Pipp tight and turning her head so that they could kiss.

After all was said and done, Zipp pulled out of her sister, unfastening the strap-on before falling to the floor, her legs still weak from the most intense orgasm she’d ever felt in her life. “Fuck, Pipp… That was… awesome!”

Pipp could barely move, but she could move just enough to sit up and give Zipp a look of ‘I told you so’. “And to think… you were… so against it…”

Zipp rolled her eyes. “Well, we are sisters, so it’s still weird. Buuuuut, maybe if we’re super careful, we can do that again sometime…”

“I’d l-love that…” Pipp yawned, suddenly feeling exhausted. “B-But first… time to hit the h-haaaa…”

“Whoa, hey!” Zipp caught Pipp as she began to fall. The younger mare was now snoring away in her hooves, her mane a complete mess and her face covered in Zipp’s cum. “C’mon, sleepyhead, it’s not time for bed yet,” she laughed, shaking Pipp awake.

“Whuzzat?”

“We gotta get ourselves cleaned up, first. Or Sunny and Izzy are gonna realise what happened.” Pipp yawned, rubbing her eyes as she woke up. Although she was awake, Zipp practically had to guide her to the bath and make sure she washed herself properly. After she was done, she took care of her own face, and washed the dye out of her mane.

Pipp was already sleeping again, and this time, Zipp decided not to wake her. She simply carried Pipp to the lighthouse, sneaking in through the top so as to not alert Sunny or Izzy, and she gently placed Pipp down into her bed. ‘Guess even after we just did that, I’m still her big sister above all else.’

Zipp made sure Pipp was tucked in. “Mmm… Love you, Zipp,” Pipp muttered, and Zipp wasn’t sure if she was awake or not.

“Love you too, lil’ sis,” Zipp said, kissing Pipp gently on the forehead, and then she retreated to her own bed, her own bout of tiredness suddenly coming on.

The following morning, Zipp awoke early, feeling refreshed and ready for a new day. As she went downstairs to make her breakfast, she found that Izzy was already up, watching some cartoon about a short, angry stallion ranting about vengeance. “Mornin’, Izzy.”

“Morning Zipp!” Izzy turned to greet her friend with a smile, when she noticed something. “Oh my gosh, Zipp!” Izzy bounced over excitedly. “You had sex!”

Zipp’s face turned red and she quickly replied, “No I didn’t!”

“Ohhhh yes you did! I can tell! A pony’s sparkle gets wayyyyyy sparklier after they’ve had sex! I call it the ‘afterglow’.”

“Well your sparkle… detection, thingy, must be off today. I’m tellin’ you, I didn’t have sex.”

“If you say so, buuuuut I’d check with a doctor as soon as you can, ‘cause I’m pretty sure there’s a bun in your oven.”

“Heh, shows what you know, Izz. Can’t get pregnant from another mare.” It took Zipp a few seconds to realize what she had just said, and she saw a smug Izzy grinning back at her. “Ah, damnit. Okay, fine, you caught me! What, is my sparkle different depending on if I did it with a stallion or mare, too?”

“No, I just didn’t smell any semen on you.”

Zipp’s face burned brighter and she glanced towards the stairs to make sure neither Sunny nor Pipp was coming down.

“So, who’s the lucky mare?” Izzy asked.

“Sorry, Izzy, but a princess doesn’t kiss and tell!” Zipp pushed the lever down on the toaster, then added, “Mostly because it’s a big scandal for royalty to sleep around. And since it’s no longer my Yes Day, I’m not obligated to tell you.”

“Fair enough!” Izzy heard a yawn behind her, and found Pipp coming down the stairs, her mane all over the place. “Morning, Pi-” Izzy gasped, and ran over to the younger sister. In a hushed voice, she said, “You had sex too!”

Pipp woke up instantly. “W-What do you mean?! Wait, ‘too’?”

“Yeah, Zipp had sex with somepony last night, as well. Isn’t that crazy?”

Pipp laughed nervously, glancing over to her sister, who was motioning for her not to say anything. “Y-Yeah, crazy… Well, you know us royals have needs too, right?”

“I guess…”

“Hey Zipp, let me help you with uh… toast!”

Izzy watched Pipp hurry over to her sister, humming as she eyed them suspiciously. “Waaaaait a minute. Zipp had sex with some mare last night, and Pipp had sex with some mare last night…” Izzy gasped. “Oh. Em. Gee! I’m the only around here not gettin’ some! Well, me and…”

“Mornin’, everypony,” Sunny said as she descended the stairs, rubbing her tired eyes.

Izzy popped up in front of Sunny, and said, “Hey Sunny, we should have sex!” Sunny’s eyes shot open and she quickly took a step back, tripping over herself and crashing to the floor. “Is that a ‘no’?”