We both paused for a moment.
"Then we wouldn't have it for ourselves..." Alan eventually replied.
I agreed, with only a minor pang of guilt. Maybe science could get one of it's own from weird old bus stop ladies. Hell, it's weird old bus stop lady's fault science doesn't have one of it's own, not mine.
Soon enough Alan's parents came home and I got to studying, and the night passed uneventfully as we silently made plans for the future with our brand new sex toy. At the end of the evening his parents drove me home. Getting ready for bed, I got a text from Alan that read "put ring somewhere fun tonight". I knew what he meant but decided to be silly, and taped it to my mouth. Looking in the mirror I looked like I had just a greyish disc taped over my mouth for some reason. The "back" of the portals looked pretty normal, almost like a simple coaster for a drink.
I went to bed and in a moment was surprised with a kiss from a mystery person. How sweet! The romance didn't last particularly long though as he started to poke his dick at my lips. It was weird to be in bed alone and at the same time have a cock in my mouth, and it made me wet and horny. I touched myself as he thrust in my mouth, thrilled by the lack of control, by the disembodied feeling. I realized that without seeing or feeling anything, I couldn't actually be sure it was Alan, and I came to the thought. Alan must have gotten something from it too because his cum shot down my throat a moment later. I imagined my mouth in his hand like a fleshlight, and was thrilled by this thought too. I knew this thing would keep me happy and horny for a long time, and with that thought the exhaustion from all the sex overtook me and I passed out.
My alarm blared at 7am the next morning, awaking me with a start and an unpleasant taste in my mouth. I remembered what happened last night and pulled the tape off my mouth. I saw a blank white through the ring, and poked a finger through. It seemed that the ring was sitting on something, facing the ceiling. I tapped my fingers around on the surface but there was no reaction from Alan. As i dressed, I kept checking on the ring, seeing if he'd move it soon. His classes weren't until later, however, and I didn't really want to disturb him. Just before I left my apartment, I slyly tucked the disc into my underwear, facing my vulva. It already had an effect on me, as I could no longer feel the warmth of protection of comfort. It gave me a feeling of being nude, while appearing fully dressed. This made me flush, and I imagined my pussy getting slick, sitting in plain sight on Alan's desk. What a view that would be.
My first class was uneventful, though the difference in pressure from sitting vs. my pussy open to the air was a bit odd at first. I couldn't feel myself shifting, and gravity was working backwards on any juices that may have leaked as I imagined all the sexy scenarios I could be getting into today. However, I was growing used to the feeling by noon. I wondered if Alan would ever be waking up, and my answer came as I ate lunch. A sudden probing at my genitals made me jump, fearing a molester at my table for just a moment before I remembered that I wasn't even attached to my own crotch. It must be Alan, finally waking up in the early afternoon. FIrst a finger poked around my labia, making me blush. Then he rubbed at my clit, and I bit my lip, trying to concentrate on my sandwich and not give away that something was happening. He knew how to get me going, and he moved just the way I liked. Then the feeling stopped, and I took a deep breath. I had barely started on my sandwich, and had been clenching one fist hard at the table. I'd never make it through lunch like this. Quickly I packed my things, but as I moved about my knees went soft. Alan was pulling apart my labia and exploring inside with his fingers. I needed to get somewhere else, ASAP.
Jamming my uneaten food into my bag, I rushed off, trying not to give in to the feeling in my pussy. Panting, I found a hallway with nobody in it and headed towards a bathroom, preferably one of the smaller, dimmer ones that people only used in emergency. Alan's fingers explored deep in my pussy, and I pushed my knees together, as if that would help. He began rubbing at my g-spot, and the sensations were too strong to keep standing. I keeled over in the hall, red in the face and breathing heavily. Hopefully nobody would come by and think I was sick and try to help... I really didn't want anyone to see me. Alan suddenly pulled his fingers out, and I attempted to regain composure and head to the bathroom. I imagined this wasn't the end, and I really had to get out of here right away. I hurried down the hall but shortly i felt a nudge of what I could only assume was Alan's penis. I was so wet that it slid right in, and I had to try my best not to let my knees give out under me with the sudden fullness inside me. He began fucking me, right there in the hallway and I had to resist trying to move with it, despite that not having any effect on the sex since I wasn't in control of my pussy. I bit my lip and leaned against the wall, pressing my forehead to the cool stone. It felt so good, and the knowledge I was being fucked right in the hallway had me already on the edge of cumming. People could walk by at any moment and see me getting fucked, without even knowing it. I reached down to rub my clit while Alan thrusted and came across the blank back of the disc, and moaned out loud with my need. I had to rely completely on Alan, and that too brought me closer to the edge. This loss of control, this exhibition... I didn't know how much it could do for me, but after this I wasn't sure anything could be the same again.
I realized I couldn't make it to the bathroom this way, and pressed my hand over my mouth to stifle my moans. My hips wiggled back and forth and my knees squeezed together. My muscles were tense and my hands were tight on my bag and mouth. Alan's pace suddenly changed, and from experience I knew he was going to cum. The change of pace, wild and hard now, was enough to thrust me over the edge, and I came with a long shuddering groan against the wall. My legs trembled and gave out underneath me and I slid to the floor. My fingers and toes felt numb and my head was spinning with pleasure. My breath was heavy as I leaned into the wall, letting myself relax. A small shudder overtook me as my pussy released it's grip on Alan's cock and he slipped it out.
After a moment or several sitting in the middle of a hallway, i managed to stumble to my feet and into the nearest bathroom. I sat on the toilet with my head in my hands, still trying to regain composure, then reached into my panties and slid the disc out. Gravity righted itself on my sloppy pussy and I discovered Alan had once again failed to use a condom, as his cum sloshed out into my underwear along with my own wetness. This also excited me, knowing my underwear was full of hot cum, and that it would cool and dry on my slutty cunt. I thought about masturbating here while the sensation was still strong, but decided against it. I should eat my lunch if I had time, then get to my next class, like a responsible adult. Looking through the hole, I saw my boyfriend and we kissed and chatted before I had to be on my way.
The rest of the day was uneventful, aside from the uncomfortable but arousing sticky patch in my underwear keeping my mind towards sex. I had tucked the portal hole into my pocket and Alan had gone to his own classes. We had other things to focus on, even when we really only wanted one thing. After my classes were finished I headed home to work on some assignments, and decided to shower off the sticky mess that had kept me horny all day. I peeked through the hole and didn't see anything, so i poked my finger in lightly. It felt like it might be a pocket. As I showered, I did a little experiment, dipping the ring into the spray. The water passed through, and I giggled, wondering where it was coming out. I imagined nowhere that wasn't embarrassing! I'd have to experiment with water drainage and displacement sometime too, but I didn't want to send a tub full of water gushing out of my boyfriend's buttcheek in class by accident. Even if it would be pretty hilarious, it would definitely be hard to explain.
When Alan arrived home from his own classes, I got a call from him.
"What did you do," he demanded.
"Huh? What do you mean?"
"You made me look like I pissed myself! Why did you do that!"
I began laughing. "I just wanted to test out water! I didn't think that would happen though!"
Alan sighed. "Well it was in my front pocket so it looked like I pissed my pants in class. It was humiliating!"
"Hmph! That was humiliating? But fucking me in public wasn't?"
"Hey! You're the one who put it on your pussy! What else did you expect! You're such a little slut, you loved it!"
I blushed. He was right. "Well..." I stammered, "I just thought it might be fun..."
"Was it?"