I went to /d/, once.

>You are Anon.
>Planeshifted.
>Ambassador.
>A damn horse.
>That last one, you're not too proud of.
>It wasn't even voluntary.
>You were just changed to a horse as soon as you arrived, so as to "not scare anypony".
>And then you were shipped off to "Ponyville".
>No negotiations, no threats, just a polymorph and a teleportal.
>The first p0ne you met was quite eager to help you return to your normal form, though, once you explained yourself.
>Even to the point of showing you where a helpful item might be found.
>And taking you there, as well as helping you sneak i-
>And you fall down, again.
>Damn these quadruped bodies.
>"Silly Anon! Trips are for kids!"
>And if she wasn't so helpful, damn that Pinkie too.
Yes, yes, now help me up.
>Despite being of the same size you are, she manages to slide underneath your prone form, immediately after which she stands up, leaving you sprawled uncomfortably across her back
>She then slowly crouches, until all four of your legs are touching the floor.
>Stable, she slides out from under you.
>And bounces off without a word.
>You shakily follow her.
>About three left turns later, you are in a small, tasteful room.
>You don't know how, because you certainly didn't enter through the massive slab of metal and gears where a door might have been.
>You resolve to question it later, and look about for the item.
>A desk, a couch, a bookcase, a trophy case...
>That last one might be-
>You hear a clunk.
>You slowly look to the doorish thing.
>The gears were turning.
>You turn and run for the desk, but almost immediately trip.
>At least the plush carpet muffled the sound of your fall.
>Fortunately for you, Pinkie bit into the scruff of your neck, and dragged you into the cubbyhole under the desk with her.
>Fifteen, twenty seconds later, the door opened.
>Presumably, Celestia walked in,(the carpet was too plush to hear the steps) and she closed the door.
>"Now, where are you?"
>ohshit
>She walked around the room, tapping the walls, sliding furniture around, and in general, searching.
>"There you are!"
>ohshitohshitohshit
>Wait, she was over by the trophy case, by the sound of it.
>What was she looking for any-
>ohshitshejustsatdowninfrontofyouohshit
>And then there was a sound like a lid opening, and she levitated a-
>wut
>A fleshlight.
>Why would she have a fleshlight?
>And it looked a bit oversized, too.
>Suddenly, magic.
>Really bright magic too.
>Couldn't see anything.
>Then it was done.
>And there was a massive horsecock between you and Pinkemena.
>Then came the fleshlight (which you were now horrifyingly aware of the reason for), held in her magical grip.
>As she, well, put it on, you couldn't help but notice the words scrawled on the side "StarSwirl".
>You wonder about the significance of that.
>If only to get your mind off of the fact that Celestia is jacking off right next to you.
>"So...tight!"
>You were a unicorn, so you wondered if you could cast magic.
>At least of the sort that wiped memories.
>"I still love you!"
>And then she finished.
>All over you and Pinkie.
>It musta been some kind of super-conditioner, her hair went straight almost instantly.
>Celestia takes off "StarSwirl" and takes it above your line of sight, probably back in its container.
>And then, handkerchief in her magical grasp, she knelt down, apparently to clean up the mess.
>She saw you.
>Mouth?
>Dropped open.
>Face?
>Red as a Class L dwarf star.
>Handkerchief?
>Dropped.
>Pinkie bolts, knocking Celestia aside.
>You follow close behind, (no longer) suppressed instincts allowing you to gallop.
>You don't watch where you're going, but you end up in a shower stall.
>As you wash each other off, the horror of what just happened washes over the both of you.
>You cling to each other, and cry.
BAD END