“Ohmygosh! Ohmygosh! I'm cumming!” the pink mare shouted in ecstasy. She had been thrusting her new candy-striped vibrator inside her since she woke up early in the morning. Ever since she had discovered the joys of masturbation, she spent many days like this. It made even made her late to her own parties. That's something she swore she never would do. Today, she had forgotten of an important appointment, due to her insatiable lust. However, Pinkie Pie simply kept thrusting, panting like a dog in heat.
In her current state, she hadn't noticed the mare with greyish fur, standing outside her door in full-blush. “...Pinkie...?" Maud said a quiet and half-monotone voice.
This startled the pink pony, make her visibly jump in surprise. “D-don't look!” She shouted in embarrassment. Maud instead walked toward her in mild curiosity. Pinkie's heart raced with each step toward her.
The purple-maned mare stared at her with more expression than Pinkie Pie had ever seen her show. “What are you... doing? It looks... fun.” Maud asked with a very tiny smile. Pinkie wasn't sure how to react. They stared into each other's eyes for what seemed like minutes.
Suddenly, Pinkie jumps on the Maud, with heavy force. “You can't tell ANYPONY! Do you Pinkie Promise?” The gray mare, looks at her with a sliver of childlike curiosity.
“Yes... Pinkie... I promise.” She says, than places a single hoof over her left eye.
Pinkie hops off of her sister, and walks over to her bed. She sits upon her plot, with legs open wide, displaying her dripping pussy. “This is a secret, but if you touch yourself here, it feels REEALLY good!” Maud sat up in the same position and placed her soft hoof upon her folds. A shocking sensation had reached her, something so very new to her. The gray mare sighs quietly as she continues sliding her hoof over her throbbing clit.
Pinkie continued in same way. But something was off. Pinkie never felt so fulfilled in her bouts of masturbation. Her heart raced in her chest, and she didn't understand why. Did her body wish to be watched? Did she lust after her sister all this time? These dangerous thought swirl around her, consuming her vulnerable consciousness. “Oh, Maud! I love you sis! I'm going to cum!” She said, and before the guilt could kick in, she orgasmed in this point of no return. Maud looked at her with a semi-surprised look.
“Pinkie... How... do you mean?” The gray pony ask the pink pony. Pinkie, bathing in her afterglow, finally begins to return to the real world, and remembers her outcry in climax. She knew it was a taboo, such feelings. She looked at Maud like she was about to break into tears. A sort of profound expression that made this bright, cheery pony waiver. She was confused by herself. Pinkie thought she had looked at Maud as only a sister, but these new, chaotic feelings were washing her.
The pink pony looked away, unable to find a response to what she had done. Then, the most of surprising statements came from her sister, who stared at her with eyes deep of thought: “I think... I like you like that too.” Pinkie quickly looked back at Maud, who continued. “I... never thought you... felt the same way...” Pinkie was stunned by these unusual words. She never knew an outburst during orgasm could bring her together with her sister. She suppressed these feelings of love toward her, but she now felt free. Pinkie felt empty only a minute before, but now she felt... unchained within.
Suddenly, the pink mare jumps onto Maud again. “Thank you, big sister!” And with that, she immediately engages her into a kiss. She darts her tongue inside of her sisters mouth. Maud hesitantly hugs her tongue with her own. They both close their eyes, tasting one another. Sounds of 'Mmm' and 'Nnn' escape their lips, and sighs of breath in between. Finally, with a final gulp of their fluids, they part and a strand of saliva connects their mouths. Pinkie speaks softly to Maud. “I love you so much! Thank you for making me realize that.” She then gives her a big grin, and Maud returns with another small smile.
“Let's try something new!” Pinkie says, fairly out-of-turn. Maud cocks her head to the side as to say 'What is it?'. “Let's use our tongues to play with our coochies!”
Maud gives a mildly confused look. “...How?”
“Welll~...You could sit on top of my face! How's that for an idea? I don't know much about sex. We'll just have to give it a try!” She says excitedly, as if she had become her normal self again.
“...Okay...” Her sister replies plainly. Pinkie bounced over to her bed and jumped onto the bed with joy.
Pinkie, with a smile bright as day, urges her on. “C'mon! I want to know how you taste, Sis! I've only tasted myself after all! Ohmygosh, I'm so nervous-cited!” Maud smiles slightly at her cute gesture, and goes to position herself above the pink pony's face. Not a second later, Pinkie Pie laps at her juicy labia wildly, causing her to moan fairly loud. Maud covers her face with her hoof, blushing at her own noises. “Mmm... You taste so yummy!” Says the pink mare between licks. Maud realized she must've been as red as a strawberry by now. But she couldn't help it, this felt so good to her.
“... Oh... Pinkie...” the stone-gray mare sighs in pleasure. Pinkie's tongue licked clumsily down Maud's slit, and love juices leaked constantly into her mouth. From a spectator's view, you could visibly the enjoyment through her mildness, and Pinkie was thrilled by this. Faster the pink one flicks her tongue, attempting to send Maud into an incredible orgasm. Pinkie Pie could feel the light twitching of the walls of the gray mare's pretty pink pussy.
“Close aren't you?” said Pinkie with great anticipation. Maud was lost for words for a moment.
Maud, sighs breathily. “What am... I close to? I feel... like peeing...” the mare grinds Pinkie's face uncomfortably, modestly wanting not to urinate on her sister who's pleasing her so well.
“It's okay! Let it out, big sis!” Pinkie says, like a child waiting to be handed ice cream. “I want to taste your yummy, cummy pussy!” the Maud moans audibly, and begins to shake.
“Ahhn~!” She couldn't back any more. Suddenly, a torrent of pleasure overcomes Maud, and she lets go of her shyness and cums wildly. With her body twitching uncontrollably for a few moments, she finally lets go and falls on top of Pinkie, then rolls off to the side.
Pinkie hops up with joy. “That was soo fun! Let's go again, big sis!” Maud lies there unable to respond for a few moments. Finally, after she catches her breath, she utters a few words with a glowing smile:
“...Sure...”