The Potion (Or, the not very clever title with a bad secondary title that’s trying too hard to be funny)

Now it’s not often that Twilight and Rainbow get together alone or more importantly, late at night, but tonight was different (as is usually the case with such stories); tonight was the night Twilight would test the potion. THE. POTION. This potion had been in development for a whole year, and now it was ready to be put into action. Twilight was very excited because…. Well… you see… she’s kind of a kink-master. Yes, innocent little Twilight who was a stranger to love and friendship only a short while ago was a kinky son of a bitch. Some say it was due to a deprived childhood, or the trauma of being a sex deprived teen, but the point is she’s kinky, and she needed someone to be kinky with. This is the first story of her kinkiness.

Twilight shook the vial containing the strange orange liquid she referred to simply as “the potion”. Glowing softly in the dim light of the library, the potion shifted hues in response to the kinetic energy. As it changed colours, the liquid also began to glow more intensely, going from a soft glow to bright shine.. Rainbow Dash, who was watching with a half intrigued, half confused look, turned from the vial to the Lavender princess standing before her.

“So is it done? Can you tell me what it is now?” the rainbow coloured athlete asked with a look of deep questioning.

“Not yet, I just need to add one more ingredient.” Twilight replied using her magic to remove the top off of the vial. Rainbow Dash sighed and leaned against the work desk, dropping her head onto wooden surface. Twilight levitated another vial out from under the table, bringing it next to the now shining red liquid. The new vial contained a clear liquid with a slightly more viscous flow than water. Under the curious gaze of Rainbow, she removed the cork from the vial, and slowly tipped it towards the potion. The fluid slid down to the edge of the vial and a single drop fell into the potion.

The drop sizzled as it touched the potion and was dispersed into it. Twilight's eyes shone with giddy as the potion changed to its final colour, pink. She was excited to get to work testing it, with the help of Dashie, obviously.
“It’s done.” Twilight said with a tone of suppressed excitement. Rainbows head popped up from the table.

“Awesome!

…

Will you tell me what it is now?”

Twilight smiled and nodded, her eyes narrowing with a scheming look.
“This potion makes people better.” Rainbow smiled excitedly for a brief moment before becoming curious once more.
“Better… how?”
“Better…” pause for dramatic effect, “sexually.”

Twilight had been involved romantically with all of her closest friends before. Okay not so much romantically as it was sexual conquest-…ic-… ally… However it had been a while since she had "utilized" Rainbow Dash for her kinky needs. there was a small concern that Rainbow might no longer be interested in Twilight.
Again, it was only a small concern.

Rainbow’s expression flickered for a moment before turning to understanding and acceptance. “Oh- really?” She said with a creeping smile. Twilight nodded and blinked slowly,

“Yes, and as it would turn out, I need someone to help test it.”
“Oh, I see… that’s why you invited me?” Rainbow and Twilight moved closer with every sentence.
“Yes, well you seemed like the most willing to take a risk.” Twilight said in a fake suck-up voice. Rainbow looked deeply into Twilights eyes, her excitement silently building both up above and down below, her wings raising slightly.

“Let’s get testing then.”

Twilight held the potion between them and with a confirmation nod from Rainbow she divided the drink between them. The taste was sweet, with a slight tang that reminded Rainbow of female ejaculate. The liquid seeped into her body, her insides beginning to warm with the flicker of passion, while her outsides began to become hot with excitement. To both of the beautiful women, it was almost as if the potion tasted of sexual release.

Twilight bit her bottom lip as the potion took effect on her, the tendrils of sexual excitement creeping across her body, causing her wings to flare (she didn't have the same control as Dash). She began to move towards Rainbow before being interrupted by a surge of energy that spread along her skin, different from before. The surge was simultaneously felt by both girls, and removed their clothing revealing their nude figures. Twilight's breasts bounced as her clothes slid down her hourglass figure; her hairbands abandoning their station and allowing her hair to return to its natural state. Rainbow Dash's minimal athletes' attire slowly slid down her body, getting stained with wetness as they went and revealing her slim, small chested figure.
Oh they were so ready to test the fuck out of the potion.

Twilight moved closer to Rainbow, who in turn brought her face to Twi’s. They fell unto each other as they brought themselves into a kiss, their mouths and body interlocking in nothing but lust. Tongues abandoned their rightful homes and explored each other’s mouths as their legs interlocked in passion, pressing them close enough as to rub against one another’s privates. Arms spread around each others chests, looking for anything sensitive to attack. A moan escaped Twilight's mouth as Rainbow began rhythmically massaging her other lips with her leg.
Encouraged, Dash continued to work away at her now writhing friend. Neither of them had felt urges this intense before and they both knew the potion was responsible. No one, however, stopped to take notes. Can you blame them? Twilight was now dripping wet, and her breathing was intense.

Dash began moving her way down Twilight’s body, towards her dripping part, her lips pressing against Twilight's most sensitive parts as she went. Twilight shuddered as her friends hands danced along her breasts and stomach. She spreaded her legs for her friend as she brought her head between them. Without hesitation Rainbow began working at Twilight's wetness with her tongue, attacking her flesh and clitoris, which seemed oddly enlarged. As Twilight's moans indicated her progression towards climax, Rainbow noticed her partners’ clit increasing in parallel size. Instead of any other possible reaction, Rainbow felt something at the back of her mind encourage her to focus on the expanding flesh. Fiercely seducing the expansion to continue, its shape changing as it did so. Rainbow could feel herself becoming wetter as she worked on her friends’ clit, only encouraging her more.

By the time Twilight was almost at climax the expansion had revealed itself to be forming into male genitalia, and Rainbow, having realized this fairly quickly, began to treat the new member as such. Sucking, licking, and stroking the erect dick caused Twilight to moan loudly as she reached ever closer to her bursting point, grabbing at her own breasts. Until finally Twilight came, her wings flaring and pussy squirting juices onto her friend, while simultaneously cumming into the mouth wrapped around her new penis; the hot sticky cum filling her friends mouth as she uncontrollably thrust her dick deeper into her.
Rainbow closed her eyes as she felt her friend cum on, and inside of her. The cum in her mouth tasted unusually sweet, and she enjoyed every pump of the ejaculation. Her wetness, however, was begging to be satisfied, as her own pleasuring’s were not enough.

As the orgasm came to an end, Rainbow moved her mouth up and down her friends dick, collecting all the cum and swallowing it. She looked at Twilight with a satisfied, yet unsatisfied look. Neither one currently had the words to express themselves, instead Rainbow Dash stood up. Turning her back to Twilight, she leaned over the work desk, revealing her VERY ready wet pussy to her huffing, yet still erect friend.

The lavender woman took a moment to recover after what she had thought was the best orgasm she’d ever had, before standing and coming up behind her prepared friend. A surge of energy shot through her, making her suddenly very excited once more, she grabbed hold of her friend and pushed herself into Dash, not stopping until she could go no further. Rainbow let out an initial gasp, her wings also flaring out, before a long moan. Her friends prominently sized horse cock was overwhelming Dashie’s pleasure sensors, escalating her sexual height, and increasing her breathing speed.

Twi slowly withdrew from her friend before thrusting herself back in, repeating this pace for a few minutes as her friend gasped and moaned in extreme ecstasy. Twilight was beginning to feel herself build up again, as her pacing sped up, she grabbed a hold of Rainbows breasts. All the while Rainbow was beginning to feel something extending from near her under-attack pussy.

Every time the limits of her pussy were reached by Twilights dick, Rainbow Dash’s own forming member began to become more defined; extending a little further with every slap of Twi’s large balls against her wetness. As her own climax was approaching Rainbow could feel the throbbing of her new dick, and the tingle in her balls as she felt the cum begin to move.

Twilights thrusts were erratic as she approached orgasm while Rainbow tensed in climatic pleasure. Finally the two friends arrived at their mutual orgasms, both moaning and gasping as they did so. Twilight released her loads into her friend with hard thrusts, squeezing her eyes as pleasure ran throughout her body, her juices flowing from her pussy once more. Rainbow Dash felt wetness leave her own pussy as she came on her writhing friend. The hot cum filling her up sent a new sensation of pleasure she hadn't experienced before, through her body and to her new dick. The pleasure was beyond anything she could imagine as her throbbing member tensed up and down shooting its load.

Streams of her own cum shot out onto her chest, the desk, and the wall as she herself writhed in pleasure. Being filled with cum, thrust into, and cumming in two spots at the same time was greater than even one of her better multiple orgasms. Even as both girls’ climaxes were dying down, the pleasure was still pushing drops of cum from their members, Rainbows dick dripping on the floor while Twilight's dripped into Rainbows overfilled pussy.

Twilight pulled her softening penis from Rainbows sex, dripping cum onto the outside of her friend as she did so, and causing Rainbow to drip more cum from her own member.

Both girls were breathing exasperatedly, as they faced each other, their members beginning to recede. After a moment of silent tiredness and lingering sexual release, Twilight spoke,

“Well…. It looks as if…. Our test was a… success….” She said with deep breathing, feeling more tired than usual. Rainbow simply nodded with a half smirk. Leaning over on the cum stained desk.
“But you know…” Rainbow looked up once more, “a good scientist never performs just one test.”

And that’s the first story of our Twilight dearest. Such a sexy yet kinky lady. I do hope you join me again sometime and we can look in through the peeping glass of literature once more to witness her exceptional sex skills, and kinky stuff! Farewell!

Author's Note

Any comments and suggestions are appreciated.
It's so hard to resist putting in snide comments about my own writing, pointing out fruity things and cliches!

Also, I just wrote this without a decisive plan, so I apologize for any loose ends.
Thanks to LeoValkenhein for some editing help

I also dearly apologize to the moderators for my half baked effort.