The story so far:
On holiday in Devon with my parents and my brother Matt, we make friends with Abi and her daughter Sally. So begins a series of increasingly exciting sexual adventures.
• Chapter One - I accidentally stumble across Matt fucking Sally. Abi catches me watching them, and she masturbates with me while we both watch.
• Chapter Two -- That evening, I tell my brother that I saw him with Sally. We each masturbate, and he ejaculates on my body.
• Chapter Three -- The next day, I meet Sally on the beach while skinny-dipping and sunbathing topless, and we fuck.
• Chapter Four -- That night, Sally asks me to film her and Matt fucking. Afterwards, they film me masturbating.
• Chapter Five -- The next day, I have a filthy sex session with Abi, in which I first pee on her and then fist her.
Now read on...
Not surprisingly, Sally's mum wanted to clean herself up before going to have some lunch and find her daughter, so I went back to my own room for another shower as well. While there, I pushed a couple of fingers up into my pussy, and wondered how on earth I'd managed to get my whole hand up inside Abi's - not just five fingers, but right up to the wrist. I certainly couldn't do it with mine; I was much too tight. Just thinking about it made me want to come again. I even made myself pee a little, and watched the pale yellow stream run down my leg and mix with the water in the shower cubicle.
After such a sexually-charged morning, it was almost a relief to go down to the beach and spend the rest of the day with my family, doing the sort of stuff normal people do on their holidays; things that don't involve fisting and wee. Sally went back to the hotel to meet up with her mum again, and I got on with my sunbathing. My mum had taken her bikini top off to sunbathe, so I did the same, hoping to get rid of the tan-lines round my breasts. It was nice to be down on the beach relaxing, and I even had a little nap in the sun.
We saw Sally and Abi again at dinner, and Abi thanked my parents profusely for looking after Sally, and bought them a bottle of wine as a thank-you. Abi caught my eye and smiled conspiratorially at me, as well she might.
After dinner, I went for my usual post-prandial stroll along the cliffs. The weather was still lovely and warm, so I went right round to the headland and sat on a rustic bench listening to the waves breaking over the rocks below and thinking over the day's sexual exploits yet again. After a while, this made me feel a bit horny (also yet again), so I pulled up the front of my dress and began to stroke myself through my panties. Pressing against the soft bulge of my pubic mound, I found the line of my slit between my labia, and pushed the material of my panties into the groove, making quite a nice little wet patch. Before they got too soaked, I decided I might as well take them off altogether, so, after checking no-one was looking, I pulled them down my legs and stuffed them into the bottom of my bag. Then to stop my dress getting wet as well, I pulled it right up round my waist and sat with my bare bum on the bench, hoping I wouldn't get any splinters. Opening my legs a bit, I pushed a couple of fingers up inside my soft, warm passage and enjoyed the squish, squish, squish sound that they made.
Masturbating in the open air was such fun, and I licked my fingers several times, enjoying the taste of my juices. I didn't go so far as to come, but just enjoyed getting myself nicely wet. After a bit of this, I began to feel like a drink. I texted Matt to see if he fancied joining me, although I suspected he might be with Sally, making up for lost time.
I took the short-cut across the fields to the "Winchester Arms", the closest of the three village pubs to the hotel (but only just -- it was a small village, and you could pretty much roll out of the back door of the "Winchester" straight into the "Ship Ahoy", and the "Smuggler's Hole" wasn't much further). Anyway, luckily the same girl was behind the bar as last time, and she didn't even ask to see my "Over 18" ID card -- remember your customers, a good rule for pub staff. The pub was pretty full, but on such a warm night it was nice to take my pint out to the garden at the back. Surprisingly for such a warm night there were only two other people there (a middle-aged couple chatting quietly), so I found a table to myself under a tree a bit further away and got ready to enjoy my drink.
Then my phone bleeped, and there was a text from Matt: "In pub, where r u?"
I texted back "gdn" and a few moments later he wandered down with a pint of his own.
"No Sally?" I asked with a grin. "Have you worn her out?"
He laughed. "Not yet. But her Mum's still got a guilt trip about last night, so they're having a mother/daughter bonding session in the lounge."
"A bit different to the sort of bonding we were all enjoying last night," I observed.
He gave me a cheeky smile, and delved into his bag, pulling out his laptop. "Talking of which, I've uploaded the video. Want to see it?"
I glanced round to make sure we weren't likely to be disturbed, but the other couple were still chatting away over by the back door. "Let's have a look then," I said, and he put the laptop on the table between us and switched it on.
I moved a bit closer so we could both see it together.
"Have you shown it to Sally yet?" I asked.
"I haven't had a chance," he said. "But you deserve to see it anyway, since you were the one behind the camera."
He clicked on the video link. I watched as it started, slowly at first with the two of them kissing, but then quickly got naughtier as Matt began to play with Sally's breasts. I felt a little tingle as the camera registered the stiffness of her dark nipples, wet with Matt's saliva. It felt a bit weird watching something that I'd filmed myself, and I began anticipating when the camera was going to zoom in, and which bits of action were coming next.
"God, I love this bit," I commented, as the video progressed to the scene where Sally sucked at Matt's cock, licking and slurping at it. "She's a great cock-sucker."
"You're telling me," agreed my brother. "And you've done a great job with the camera. Way better than it would have been if we'd just set it up ourselves."
Not only that, but I was starting to get turned on by it all over again. It had been enough seeing Sally's big bouncy breasts and perky nipples, but now that she was sucking vigorously on Matt's cock, I could feel myself start to get a bit more aroused. I just knew how wet I'd be between my legs, and longed to touch myself there, but didn't want to be the first to start. I looked at Matt, and wasn't surprised to see the swelling of his cock in his trousers. It didn't look fully hard yet, but even as I watched it seemed to expand and press against the material.
He seemed to be trying to look at me to gauge my reaction, but looked away embarrassed when I caught him peeping.
"Hey, you don't need to get shy," I said with a smile. "Don't forget who filmed this. I've seen a hell of a lot more of your cock than I can see now."
Was it watching the video that was getting him aroused, or was there more to it than that? Was it maybe watching it with me, his own sister? Whichever it was, I could see how long and hard his prick had got already. On the computer screen, I watched as the same cock, now slick with Sally's juices, thrust in and out of her juicy pussy. I looked at Matt and he was stroking his cock through his trousers. As I watched, I saw a little damp patch appear through the denim, where a spontaneous emission of pre-cum lubrication had obviously spurted out and soaked through.