Uncontrolled Orgasm.

I leaned in carefully, giving it a slow, gentle kiss right on the tip. It twitched against my lips, making me gasp in surprise! I did it again, a little more intently. It was so surprisingly soft, but with an incredible, inner firmness. I'd never felt anything quite like it before. It was strange... but I liked it! I kissed it some more, licking it a little with my tongue. Vivian kept getting hotter and hotter beside me, breathing heavily, her reactions to what I was doing silently pushing me on. I opened my mouth, sliding it inside. It was just so big, I could barely even make it fit! But it felt incredible, so spongy and hot, filling my mouth! I tried to go further, but could only get about half an inch past his head before it started making me gag. How on earth did the girls in p*rn make this look so easy and fun? Well... to be fair, the 'fun' part, I was understanding; I really was enjoying myself now, especially from the way it was making Vivian react as she watched! But if I couldn't make myself take any more of it into my mouth, I'd just have to find other ways to make it feel good for him!

I started stroking more, sucking hard on his head and swirling against the underside with my tongue. I could hear low, masculine moaning coming from the other side of the wall, muffled but obviously appreciative of my efforts. For the first time, I started to really wonder who this guy was. One of the other campers, obviously. Maybe one of the college-aged guys who I'd seen laughing and drinking their beers across the way? Maybe the father of those two young boys who had been running all over the place chasing each other with sticks yesterday afternoon, the one with the fat, exhausted-looking wife? I couldn't quite believe a woman like her had been able to attract a guy with a dick like this in the first place... but who could say? It could have been any of them, any at all! Well, except for that one black guy I'd seen, that was.... this guy was obviously white, or possibly Latino, but definitely not black. Ultimately, it didn't matter. Even if I could somehow figure out who it was, I didn't want to know; it was so much hotter when it could be any of them, when I had no idea which of them it was!

I was having so much fun sucking this stranger's huge, thick cock, I wasn't even thinking about the inevitable result. When he knocked against the wall, I thought it just meant I was doing a good job; that I'd made his leg shake or something, and he'd banged against it by accident. It was only as I felt the first huge, hot jet of his cum hitting the back of my throat, making me choke, that I realized what it had meant, that he'd been giving me a warning to prepare myself. I'd have pulled away for sure, and let him finish onto the floor... if Vivian hadn't chosen that exact moment to start cumming herself, squealing and shaking at my side! I... I just couldn't! I needed to make it good, for her if not for him! I sucked hard, stroking as quickly as I could, taking jet after jet of it, letting him fill my mouth. There was so much of it, and he just kept on giving me more! But finally he withdrew, from my mouth and the hole both, vanishing back to wherever he'd come from. I turned to look at Vivian, my mouth open and full, asking her with my eyes what I was supposed to do with it all now. Maybe she misinterpreted my look, because suddenly she was plastering her lips onto mine, pulling me tight against her chest, invading my mouth with her long, sinuously twisting tongue!

“Mmph!” I exclaimed, but she wouldn't back down, kissing me harder and deeper, her hands grabbing my ass, and my breast! Only after the stranger's hot, salty load was entirely gone, either swallowed by one or the other of us, or leaked out onto our chins and chests, did she finally pull away enough for me to speak.

“I thought you said you couldn't cheat on my Dad,” I breathed heavily, panting in her arms.

“Your Daddy has a rule,” she grinned wickedly. “He says it doesn't count as cheating, if I'm with another girl; I just have to tell him all about it, after I'm done.” My eyes widened in surprise, and she started kissing me again, pulling me up to my feet with her as she stood. I'm not sure how she managed to find another quarter without even turning to look, much less get it properly into the slot, but she pulled me in under the shower with her and started playing with me between my legs. I moaned, nearly losing my footing, but she held me tight in her other arm, kissing me deeply. I was so nervous, so unsure of what I was doing... but I couldn't let her just touch me like that, not without touching her back! She was so soft, and hot, so juicy and wet! Not just with water from the shower, either. We were both squelching audibly, fingering each other in time as we ravenously made out. It was so different, compared to doing it for myself... but she was so good! The wave was rising, fast and hard... I screamed, for once in my life, making not even a token effort to stay quiet, wanting her to know how good she was, how much I loved what she was doing to me! She was only lagging about a minute behind, and squealed just as loudly and as long as I had.

She held me tight until the water cut off again, and that seemed to be some sort of cue. She backed away, just enough to look me in my eyes, stroking her fingers through my wet, heavy hair. She bit her lip... and dropped to her knees, grabbing me by my hips and pushing me roughly up against the tile, leaning forward and starting to eat me out!

I trembled and gasped, grasping at her head, running my fingers into her soft, wet hair. It was incredible! Even better than what she'd just done to me with her fingers! She licked and sucked, bathing up and down my lips with her tongue, swirling hungrily around my clit! I could barely even breathe, the pleasure was so intense! I started hyperventilating... and this time when I came, I couldn't even find it within me to scream!

My entire body convulsed outside my control, and if it hadn't been for Vivian catching me as I fell, I'd have cracked my head open for sure! She held me tight to her chest and laid us both down with me on top, my head sandwiched between her huge, amazing tits as she reassuringly stroked my back. It took a long time before I could move again after that.