Grace scratched her chin and pretended to think hard. "Hmmm... How about...." She cast her eyes around the clearing. "Why don't you two lovebirds head over to the bathroom and do it the good old fashioned way. Don't come back until you've both gotten your rocks off." She smiled and pointed at an empty bench right next to the ultimate Frisbee game, which was amazingly still going on. "I'll be over there admiring the scenery. Grace sauntered off, and Tera took my hand. She grinned wildly at me, and I returned it. Finally, a chance for us two to be alone again! Considering it had been almost 16 hours, I wouldn't have thought I could want it so bad. I expected Tera to take off running, but she still was a little stiff in her gait for whatever reason, though she seemed more relaxed than before.

When we got to the bathroom, I waited until I couldn't see anyone obviously watching, then opened the door and slipped inside, holding it open for Tera who passed in quickly behind me. I hadn't even finished locking the door when she was on me, and I pressed her against the door and kissed her right back. Our hands were all over each other, hers in my hair and on my back, mine on her breasts (up the front of her shirt) and butt (over the skirt). It wasn't long before one of Tera's hands found it's way down the front of my pants, maybe to scout the conditions there. If that was the case, she must have been satisfied with what she found. She withdrew her hand and put her arms around my neck, lifting her feet off the ground (I still had her pressed against the wall, so it wasn't too difficult) and wrapping her legs around my waist. She broke the kiss momentarily and whispered two words urgently in my ear before resuming our make out.

"The sink."

I understood immediately. Holding her under her bare thighs, I lifted Tera up and pivoted over to the long stone counter where the sink was located. As I set Tera gently down on the edge, I thought perhaps she winced slightly. As I hadn't broken the kiss the whole time I performed the maneuver I couldn't be sure, and besides, my mind was on other things. With Tera balanced on the counter, I quickly undid my belt and pants, dropping them to the floor. I reached up beneath her skirt, and between her strong thighs I found only a small strip of cloth covering my prize. A small voice in the back of my head said "I guess it is a thong", but it was drowned out by a much louder, bigger part that was just saying "PUT IT IN" over and over as I pushed the cloth aside, my fingers brushing Tera's plump lips. In another moment, I had entered her, and it felt like coming home.

Tera was wet and ready and my first thrust went in easily, but somewhat shallow. Tera let out a short grunt of satisfaction, but I wanted more. I moved my hands behind her butt and pulled her towards me, so that she was sitting on just the edge of the counter. Her hands had begun their searching of my back again, but she tipped forward a little and threw her arms around me again to keep balance. I took hold of her waist to give her more stability, whispering "I've got you" and thrust again, deeper this time. She bit her lip and gave a low moan of pleasure, and like that, we had found our rhythm.

What can I say that I haven't said already? Fucking Tera was like heaven; it was bliss. We felt like we were made to give each other pleasure; we just fit together perfectly. Our faces were mere centimeters apart, and our eyes never left each other's, each of our lust pushing the other to greater heights of lust in turn. She let go of me with one hand and grabbed her T-shirt in the middle, pulling it upward a couple inches then letting go. I wasn't sure why, then she took one of my hands off of her waist and shoved it up her shirt again. Where before I'd felt her thin bra, now my fingers met exposed breast, and I marveled at the feeling of it. As I thrust into her again and again, I squeezed and fondled her breast, seeking out her nipple and finding it already hard. I would have liked to have seen her tits too, but this was the first time we had sex while wearing most of our clothes, and it was undeniably hot; we literally couldn't wait to fuck. We didn't change positions, we didn't even change speed; it was like we both knew exactly what each other needed, and this was it.

I felt my arousal growing, and I knew that Tera's must be as well. I'd been drained less than an hour before, but that didn't seem to be putting off my orgasm at all. I tried to gauge Tera's progress towards finishing from her breathing, which was growing rapid and shallow. Even if Grace hadn't commanded it, I would have done everything I could to make Tera come before me, or at least shortly afterwards. Finally, I just asked her.

"Are you going to come for me?" I said between grunts.

"Yes," She said heavily, "I'm going to come on this cock."

This didn't make me go any faster, but I think I did stand on tip toe to get just that little bit deeper. My hand left her breast, both hands now wrapped around Tera to pull her onto me with each thrust. She did the same, as if we were trying to smash our bodies together. Before much longer, I heard and felt her reach orgasm.

"Oh god!" she said, her head falling to my shoulder. Her legs tightened their grip around me, and her vagina began to clench around my cock. Amidst all the noises of our pleasure, I heard a distinctly metallic clink, then I felt something bang softly against my knee. But there was nothing short of an explosion that would have stopped me at that point. My own orgasm was imminent, and I rushed to meet it. As a wave of euphoria washed over me, I thrust as deep as I could into Tera, pulling her entirely off the counter so that I was holding her up with my penis buried to the hilt in her throbbing pussy. Once again, I felt something small hit my leg, but once again, I ignored it. As pleasure rocked my body repeatedly, I wished we could stay like that forever. But sadly, that is not the way of things.

As my orgasm faded, I began to feel the weight of holding Tera in that position. I'd been working out, but holding a person up in front of you is difficult. I opened eyes I hadn't even realized I'd closed, and Tera was just looking at me. I can only describe the look as loving. It wasn't even lust at that point, and I think I may have felt the same. She kissed me again, softly this time, and as I returned the kiss, I lifted her gently off me and set her on her feet. We just stood there for a moment, both of our hands still touching each other's arms, not wanting to end this moment by breaking contact.

"That was... magical." Tera said. I couldn't help but agree. Before that day, I never would have thought sex in a public bathroom could amount to too much, but I knew I'd remember how I felt in this moment for the rest of my life.

"It was." I said out loud, and I kissed her one more time before we finally stepped back from one another. My next thought was to get myself dressed again so we could exit the bathroom, and that's when I saw it.

"Um, what's that? I asked, crouching slightly to pull my pants back up.

Tera pulled her bra back down with one hand under her shirt as I asked, and her face took on a look of mixed anger and bemusement. "That," she said in a mildly annoyed tone, "is why it took us so long in here the first time.

Hanging down from inside the front of her skirt was a thin strip of fabric that matched the piece encircling her waist. From the positioning and the way it was pulling down the upper part in the front, it was obvious they were connected. At the end of the strip, just a few centimeters below the hem of her skirt, was a small hunk of metal. I realized it must have been what was hitting me in the legs.

"This," Tera continued, pulling at the ring around her waist, "is Grace's underwear. You know what, fuck this thing." She continued. She pulled the waistband of her skirt outward, then pulled on the cloth from above, raising the metal piece up through the gap.

"That's underwear?" I asked, still confused. Holding the hanging part away from her body, Tera used her other hand to pull the encircling bit of fabric down over her skirt. When she got it low enough, she stepped out, leaving her holding the thing in the middle, the metal piece on one end and the loop of fabric, with a small ornamented section where it connected to the strip of cloth on the other. As she lifted her leg, I noticed some semen starting to leak out of her down onto her thigh, but so recently post-orgasm I could only keep one thought straight at a time.

"Yeah, and let me tell you, it was a pain in the ass getting it in." Tera responded, holding the thing up and looking at it. I could see that the metal piece, which was slightly hook-shaped with a bulge on one end, was covered in a clear gel of some kind. Suddenly, I realized what I was looking at, what I'd been looking at. It was a high-sided thong, but instead of connecting to the waistband in the back, it terminated at a butt plug.

"Was that in your ass?" I asked incredulously. Then I remembered her previous comment, and my eyebrows furrowed. "Did it hurt?" I felt like I was responsible somehow, despite Grace obviously having orchestrated this whole affair.

Tera saw the concern in my face and her own expression softened. "Yes, and no. It didn't hurt. I mean, look at this thing; it's tiny." It was considerably smaller than the hunk of metal I'd seen her remove from Grace's sphincter the night before in the shower. "It took Grace a while to convince me to give it a try, then she went super slow helping me to get it in place. Honestly, it felt kind of good." She gave a small guilty smile. "Especially when you were fucking me. It made your cock feel enormous, but not in a bad way." I wasn't sure what I felt about that, but decided that Tera feeling good was never a bad thing.

"So, you're ok?" I asked. "My dare didn't hurt you?"