Run away!

You doubt your sneaking abilities since you always were pretty clumsy, but if you run now, you at least have some chance of getting a bigger distance between the two of you. You quickly get in a running start position and start sprinting away from the couch.

You make it about 2 feet, before hearing an audible "Hey!" from behind you.

This makes adrenaline pump through your veins and you start running faster. You make it about 10 feet away from her before you feel something strange under your feet. Something hot and wet touches your foot. Whatever it is, has a very slippery texture. You start losing your balance and slip on the weird liquid. You land a few feet further on your face. It definitely hurts, but you quickly make an attempt to get up and keep running. As you roll over on your back to get up, something blocks your path.

You roll over to see a dark figure a few feet away from you. You can safely say that this is Sia, but do you have any time to get away? That question is quickly answered. Sia pounces on you, making you flinch. She grabs a hold of your arms with her hands and holds your legs with her own. You quickly find yourself spread wide on the floor. Sia's leans in a bit closer so that your faces meet. You can make out an expression on her face. It's one of pride and happiness, with a noticeable teasing undertone.

She says "I gotta say, you did make it pretty far, but cmon, did you really expect to get anywhere?"

Her voice is quiet and soft, almost as if she's trying to preserve the silence and darkness in the room. As for her question, you really didn't hope to get far, but anywhere was safer than at that couch at that point.

Sia continues "I mean, at least I got some target practice by shooting that jet of cum in front of you. But even if I had missed, I'm pretty confident in my running speed. Anyway, now that we're here, how would you like to spend our time together?"

You nervously gulp before responding with an untimely joke "How about a nice, friendly conversation?"

Sia giggles and says "Hey, I wouldn't mind that, but I did have something else in mind..."

After saying this, she moves her hand down and starts undoing the zipper of your jumpsuit, smoothly sliding it completely off your body and throwing it to the side. Sia would be getting a good view of your cock and ass if there was any light, but alas, you're both stuck in the dark. She places her hand back on your arm and holds you tight as she gets in a more comfortable position for herself. Then, you suddenly feel something hot and soft grazing your asshole. Your ass starts tightening up as you feel the tough thing press harder against your anus and with a *pop*, you get penetrated by Sia's cock. You flinch and squint your eyes from the sudden feeling of intrusion. You knew that this was coming, but you didn't expect the sensation. Sia was pretty thick, around 3 inches of dick meat stretching you wide open, but her length was more impressive. You don't know how her 12-inch dong is going to fit inside you, but you don't really have much say in the matter, do you?

You grit your teeth, as Sia keeps sliding her giant shaft inside of you, a bit too fast for your liking. You feel your rectum get stretched wide open, as Sia intrudes further in your rear.

Sia brings one of her hands over to your stomach and says "Heh, I can even feel it going inside of you from out here. I'd like to see how you run after I'm done here..."

You feel more nervousness come over you, but don't fight what's coming. Sia finally seems to slide all the way inside of you, and her cock brushing against your prostate makes your own dick jump to a full erection. You let out a quiet moan and look up at the darkness covered face of the dickgirl taking her dominance over you. Sia quickly pulls back her shaft before slamming it back in with full ****. You let out a significantly louder moan this time, but you get muffled by Sia.

She puts her hand over your mouth and says "Hey, can you keep it down a bit? If you don't I'll just keep holding your mouth until you do."

You get slightly embarrassed from that and try to suppress your moans. She lets go of your mouth and resumes her agenda. She starts fucking your behind at a regular pace, making your cock twitch every time she presses on your prostate.

Ever slowly, Sia increases her tempo, thrusting in and out of you with all of her length.

You both breathe heavily in each others faces for a while, until she finally brakes the silence. "So, how about that friendly conversation you wanted?"

You shoot a confused expression at her, but since your mind is drunk with a mix between hornyness and pain, you dazily answer with "huhhh... yeah sure." in a tired voice.

Sia starts off by asking "So, how's your experience of working here so far?"

The nonchalance of the situation goes over your dazed head, so you answer as best as you can, through your heavy breaths from being fucked. "It's been... ugh... an experience. Pretty girls but... ohhh... a lot of weird feelings."

Sia asks you another question "Huh, cool. Do you have a favorite model that you've tested with?"

You answer "Well... oof... if I had to choose then... oooh... I'd pick... AAHHH!"

You scream out in pleasure, as you didn't even notice your own orgasm building up. Your mouth quickly gets smacked shut by Sia's hand and you moan into it, letting out a muffled sound of lust. Your first few loads of jizz shoot up and hit Sia on her toned stomach, but the others land over your own body.

"Great, now you got me all dirty. Alright, I guess you're right, it's time to finish this..." Sia says, before taking a more dominating position and thrusting faster and harder inside of your ass.

Her massive nuts smack against your ass cheeks with every thrust. You almost feel like her entire weight is being pounded into you with each thrust. She starts thrusting faster and faster, reaching speeds unseen by you before. Even though you just came, you start moaning into her hand more and more, from your hardcore assfuck. Sia starts breathing heavier as well, and you feel her throbbing cock get hotter inside of you. With one last powerful thrust, your rectum gets filled by Sia's girl cock and she convulses as her orgasm takes over her body. She sprays giant loads of her sperm deep down your ass, filling up your insides pretty quickly. Cum starts leaking out of your ass with her dick still plugging it. Your stomach even takes a rounder shape from all of the cum that get's pumped into you.

After Sia's orgasm subsides, she collapses on top of you.

She says, with an even quieter voice than before "Don't mind me, just taking a break...".

You patiently wait, while also catching your own breath after the excruciating fuck you just had. Right then, the lights switch back on. Your eyes take a second to adjust to the brightness and you can more carefully admire the resting beauty laying on you. After a minute, Sia picks herself off of you and gives you a hand so that you can get up as well. You stand up and feel pressure from your ass, probably from Sia's schlong, but you manage to stand pretty fine.

The speakers switch on, and Alan speaks up "Wow, great test guys! Nice try there, but there's no running from Sia. Well, hope you both at least had fun. It sure seemed like it from where we were watching. Anyway, you guys get back to your rooms, our little subjects got more testing to do!"

You exchange a friendly hug with Sia and separate, each going to your own rooms.

You got the "Interrogation" ending with Sia.