http://www.fimfiction-static.net/images/story_images/43513.jpg?1346001577 pic for this. so you can imaaaaagine!
 
>You pick up your sweet little pony.
>Her soft alabaster(white) coat, and soft jet black mane rubbing against your skin, sending shivers up your spine.
>You gently place her on the bed, and get in next to her.
>You look into each other's eyes.
>Her beautiful canary yellow pools reflecting back into yours, even in the low light.
>You pull her close, your lips locking with her's.
>A memory comes to you.
>When she first saw you in Equestria, she thought you to be utterly repulsive.
>You had initially distanced yourself from her, but she warmed up to you, by finding a friend in you.
>Now you two were so much more.
>Her tongue pushes past your teeth, betraying her passive-aggressive nature.
>You're both wrestling for control now, the two of you running out of breath as time passes.
>You gain the upper hand by running your hands over her cutie mark.
>A stylized portal symbol, her only remembrance of her past.
>She groans.
>"You're so predictable Anon."
"Can't help it, GlaDOS" you say.
>She sits up, her mare bits resting over your shorts,leaving a dark stain on your crotch.
>She's always been easily excitable.
"Let me get that for you," you say as you begin to undo the buckles on your clothing.
>She swats them away, shouting "No! I can do this myself!"
>You pull your hands away, letting her do her thing.
>Eventually you find yourself in your boxers thanks to her handiwork, or in this case, hoofwork.
>She brings herself close to your member, taking a big whiff, inhaling your scent.
>She noses her way under your boxers, finding your limp member.
>"Still not hard yet? Guess I'll have to take care of that..."
>She pulls your boxers down in one swift motion, your dick flailing around comically.
>She giggles a little, before bring her mouth down on it.
>Sweet Celestia, she's good.
>You guess having been a computer would have given her access to material about blowjobs.
>She brings her tongue from the base to the tip of your member.
>Pony tongues were just a bit more rough than a human, more flexible too.
>They made for the perfect blowjob.
>GlaDOS wrapped her tongue around your member, and bobbed her head.
>Up and down. Over and over, taking in all of you.
>It felt so good, and you were so close...
>Until she pulled off.
>Your hips bucked, as you almost hit your peak.
>She was always able to get you so close.
"Dammit GLaDOS..."
>"Did you like it?" was her only response.
>You decide to get some revenge as you pull her close and distract her with a kiss.
>As you stick a finger up her ass.
>She gasps as you move it around inside her.
>"A-anon...S-stop."'
>Anal had always been a turnoff for GLaDOS, she had good reason for this as well.
>You continue anyways. Exploring her depths, discovering more about her less traveled route.
>You decide to bring a hand to her breasts as well.
>You pinch her nipples, one at a time, dividing your attention evenly between each.
>She's shaking in your grasp, her mare-hood twitching.
>She's close.
>So you pull out and away.
>"Anon, please! You know I don't like anal!"
Did you like it?
>"Grr... That's enough foreplay!"
>She tackles you, forcing you against the bed.
>She's pinning you down with her hooves, trying to line herself up with your member.
>After a bit of messing around she's got it right, and she thrusts forcefully down on you.
"GAH! Wrong hole!"
>Well, she got it mostly right.
>Once again, you find a part of your self inside her other hole.
>Wincing, she slowly brings herself off of you...
>Only to be stopped by your hands.
>"Anon..." She whines.
I'll be gentle. I promise.
>"You mean it?"
>You make your promise clear by bringing her lips to yours once more.
>She melts in your embrace, relaxing instantly.
>You lie there for a moment, then you decide to thrust.
>"Slowly, please..." says GLaDOS.
>You head her words, and you pull out slowly, till only the tip of your member was left in side of her.
>GLaDOS decides to take measures into her own hooves, and sets the pace for the both of you.
>Slowly, she inches her way back down, her anus twitching every few seconds, milking you.
>She repeats the process a few more times before settling into a rhythm.
>She eventually gets into it. Bouncing on your dick as if she were on a see-saw.
>"Anon, It feels kind of funny... Like... L-like I'm gonna cum!"
>"AH! I am. I'm cumming Anon!"
>Her walls clench on your member, sending you over the edge as well.
>You paint her insides white, as she squirts onto your stomach.
>She collapses on top of you, a loud squelching noise echoing through the room as your member pops out of her.
Did you like it?
>"It hurt alot at first... But then it felt really good."
It hurt because you're supposed to use lube.
 
End (until i make it better)