[Link to the much tamer Part 1](https://www.reddit.com/r/eroticliterature/comments/6xq9cu/welcome_back_chell_part_1_portal_2_spoilers/)
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Chell walked into the 2nd test chamber with a bit more hesitation. Her legs still shaking from her ordeal in the first, she had a hard time holding herself up, almost as if gravity was still set too high.
“We are not going to waste time with this one, Chell. We’re doing portal testing. But this test is more about how much of a dirty whore you are. Is that the right use of the term? I’ve never spoken those words before. But look at you. I’m sure it’s fitting.”
“The last test gave me a lot of footage of your ecstasy. But I didn’t get to see you in action. You are going to pleasure yourself this time. And I am going to do a little more than just watch.”
What looked like half a bed lay in a small walled space not much bigger than the half-mattress itself. A pillow lay on one end, with a block on the floor on each side of where one’s head was supposed to rest.
Chell was a bit confused, until 2 portals emerged. The orange one on the wall at the end of the bed where one’s torso would go. The blue portal above where the head went. This puzzle was child’s play for Chell, although clearly her problem solving skills were no longer the obsession of her robotic master.
Chell hesitated. She was forced into her orgasm in the previous chamber. She didn’t want to continue.
GlaDOS saw this. A couple of prehensile cables emerged from her. They curled themselves into Chell’s pants and tore them apart.
“You won’t be needing your pants for this one. I told you they were useless.”
Chell did try to hold the cables at bay, but they just wrapped around her arms.
GlaDOS lay Chell’s head on the pillow, and slipped her legs into the orange portal at the end of the half-bed. Chell’s legs emerged above her face and GlaDOS forced them apart, resting Chell’s thighs around her head, and her mound on her own lips. Her feet standing on the blocks by the bed, in essence Chell was sitting over her own face, like being the giver and receiver of a high-tech gloryhole.
“Now we’re playing with Portals.” said GlaDOS, amused.
Chell breathed in the smells of her still soaking pussy. GlaDOS wrapped another cable around her neck and head and forced Chell’s mouth onto herself.
“When was the last time I came?” Chell thought to herself. Years of testing in the labs, time after time, with no end in sight. She hated that this was being forced on her, but her body yearned for it.
Giving in, she licked. Her dripping labia parted and her hips shivered.
Never had Chell seen her vagina up close like this, at the most maybe checking herself out down there with a mirror. She felt like a contortionist, but without actually having to twist her body.
She licked steadily, her juices drooling into her mouth and onto her face. She felt more in control of herself and her own sensations than she ever thought possible. As if on queue, GlaDOS began to take more control away.
“Interesting. Not 5 minutes from one orgasm and your body is already preparing for another. My sensors detect your pelvic region’s temperature is increasing with all the blood rushing there.”
“What happens to all this progress when we introduce pain?”
2 small wires detached themselves from the cable around Chell’s neck. The slid over and wrapped around Chell’s nipples and pinched. Chell gasped.
“Intriguing. This clearly gives you pain, but there is more moisture emerging from your nethers, and scans register an endorphin spike. You slut.”
Another cable emerged from GlaDOS splitting into 5 smaller ones. They wrapped Chell’s hand and fingers.
“Now, I can be you. Feel what you feel. And I can get a reading from inside you.”
GlaDOS moved Chell’s hand to the opening of her pussy. Curling 2 fingers back, GlaDOS pushed 3 fingers intertwined with her cables deeply but slowly into Chell’s vagina.
Chell moaned aloud, arching her back. She gasped for air for a brief second then the cable around her neck reeled her face back onto her wet clitoris like a leash.
As her fingers thrusted into herself, Chell began moving her hand in sync with GlaDOS, pushing faster and faster.
“So this is the real you.” chimed GlaDOS. “41 test chambers and I’m only getting to know you now.”
“Let’s see how you react to this. You dirty girl.”
Chell made a muffled scream as the cables around her nipples wrapped and squeezed her breasts, releasing a surge of electricity. She writhed and writhed, partly in pain, mostly in euphoric frenzy as her senses were pushed to the brink.
Her body tensed and buzzed as she neared her next orgasm. She took everything in.
From the wires wrapped around her thrusting fingers acting like ridges of a ribbed toy. To the shock and zapping sensation stinging her breasts in intervals. To the delicious feeling of licking her own clit — feeling that swelled nub on her own tongue with her lips pressed around it. Her body reacting, tensing, as she sucked on herself furiously. The salty aroma of her sex on her tastebuds. The sticky juices mixing with the saliva that she swallowed away, hungrily.
For the first time in forever, Chell let her guard down.
And then she came. Flooding with ecstasy, Chell shook and shook and stiffened. Her thighs squeezed her head as her orgasm pulsed throughout her body. Her vagina squeezed her fingers as she came again and again and again. And as she came, GlaDOS tensed her cable-like tentacles with her, gripping firmly as she held onto Chell and her convulsions.
Chell let her head fall back, heavy. She let out a long sigh, the smell of her grool-filled breath escaping from her mouth. She turned her head to GlaDOS’s gazing eye-light, and rubbed the side of her metallic frame, like if she was giving a lover a post-coitus caress.
“You’ve never looked at me like that before…” chimed GlaDOS, inquisitively.
“I must… go compile the data. I have to go now…”
GlaDOS pulled her cables back off Chell’s body, and retracted into the ceiling almost hurriedly.
Chell curled up and held her own naked body. Enjoying the glowing feeling, she fell asleep.
Source: reddit.com/r/eroticliterature/comments/6y13wp/welcome_back_chell_part_2_portal_2_sequel_spoilers