First of all, I've gotta warn everybody who goes to read this; this is not my usual style for posting here and on top of that, this is not my usual quality. The reason for this is because I'm directly ripping it from a post I made over on a 4chan thread (one of the FoE threads over on /mlp/) and the reason for that is because actually, why not post it here too, since it's actually got a comic being made for it and it doesn't get lost to time that way.
As for the quality and style, like I say, not only is this a 4chan post being copy pasted to here, but it's also the fact I'm out of practice with writing and writing this was a spur of the moment thing. I suddenly had a burst of drive and inspiration and I took it by the horns and used it.
Now? Now I've got nothing left again.

Anywhoo, for the next point, I best give some context. This story came about by someone making comment of Pip sucking one of Velvet's vibrators and I made the comment of "This raises the question; WOULD Pip suck a phallic object that had just been inside Velvet?
If yes, would she go a step further and suck off Calamity for the same cause?"
For source, here it is; http://archive.heinessen.com/mlp/thread/18742015#p18776789
Lastly, if you're interested in the comic, I'll try have a link to an album specifically for it ASAP for you.
Now, lets begin...

Littlepip sneaks into the room as Velvet and Calamity are fucking, sits in the corner just watching the pure devastation of Velvet's marehood.
Imagining she's invisible, Littlepip approaches the two, watching, closer... closer... so close that she can practically smell the juices gushing from Velvet as Velvet cries out in ecstasy, more juices spilling from their love making.
Without a thought, Pip gingerly brings her tongue closer, before being slapped around the face by Calamity's dick, errupting straight onto her face as she gets hit.
Calamity gasps in shock, finally realising that Pip was watching for an unknown amount of time. Velvet initially finds herself shocked, but quickly grins as she notices Pip's glare.
"You want to have a taste, don't you, Littlepip?" Velvet cheekily giggled.
All Littlepip could do was nod silently and lean forward, going for the prize.
"Uh uh uh. Naughty Pip. I never said you could taste directly... but uh... if you want, you *could* get a second hoof taste from Calamity."
Looking at the suddenly smirking Pegasus, Littlepip took a moment to think before gulping, looking at the monstrosity before her.
Before she could fully react to what was about to happen, Calamity gently placed his hooves on the back of Littlepip's head and began to guide her closer, her mouth opening more and more as she approached, driven by the scent of Velvet's love.
Just as her tongue began to touch, the thought that she was licking a stallions penis ran through her mind and horrified her for all of a split second before the taste overwhelmed her senses.
The subtle saltiness and slick sweetness of what she could taste was better than any she had encountered before, even better than she had imagined Velvet would taste, even better than she COULD have imagined.
There was no longer any thought, only pleasure as Calamity began manually bobbing her head up and down on his dick, the sensation making him hard again despite having only orgasmed moments before.
Not wanting to feel left out of the action, Velvet now took over Calamity's job of making Littlepip take yet more and more of her lovers penis, amazed by just how wet Pip was.
Gently running her tail under Littlepip's, Velvet enjoyed the sounds of Littlepip moaning in mindless pleasure while Calamity simply enjoyed the act.
Wanting to see just how far Littlepip would go, Velvet stood over both Littlepip and Calamity, magically fondling herself until yet more juices gushed out and onto the stallions hips, cum from both parties staining Littlepip's face and Calamity's thighs.
As if by command, Littlepip began deepthroating Calamity, desperate for the pleasure centre that was Velvet's scent.
Before Calamity could respond, an inability to hold back overcame him and a new load was shot into Pip's throat, making her eyes shoot wide as she realised once more what was happening.
Choking as she came to her senses, Pip quickly pulled the penis out of her mouth and looked at Calamity, and then Velvet, and then in the mirror... before licking her lips and blushing with a smile.
Knowing how Pip must have felt, Velvet leant in towards her, licking her ear softly before speaking a phrase as if to further confuse and destroy the poor young mare before her.
"Same time tomorrow?" She muttered with a wink and a smile.