For newcomers who might like to catch up on the previous chapters, a quick summary follows.
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 in our bedroom, I tell Matt that I saw him with Sally. We each masturbate, and he ejaculates on my naked body.
• Chapter Three -- The next day, I meet Sally on the beach while skinny-dipping and sunbathing topless, and we have sex.
• Chapter Four -- That night, Sally asks me to film her and Matt fucking. Afterwards, they film me masturbating.
• Chapter Five -- The next day, I meet Abi again. She watches me pee in the bath, and then I fist her.
• Chapter Six -- That evening, I meet Matt in a pub garden and we watch the video of him and Sally fucking. Turned on, I give him a blow-job, and he fingers me until I orgasm.
• Chapter Seven -- The next day, I go with my parents to a cider farm. While they are out of the way, I have a quickie fuck with the farmer's son.
• Chapter Eight -- That afternoon, I meet Abi and pee in the bath again, this time directly onto her. Her husband, Chris, arrives, and he fucks me, including giving me my first taste of anal sex.
Now read on...
I woke early on Friday morning, and lay in bed idly strumming at my clitoris. I opened my legs just far enough to allow me to slip a couple of fingers inside my vagina, and was pleasantly surprised to find how sloppy I already was up there. It was the last full day of my holiday, and to be honest, it hadn't been anything like I'd expected. I'd had a hell of a lot of sex, for a start, and not just of the normal "in, out and wipe yourself clean" kind, either. Peeing, fisting, anal: I'd had my eyes (and other places) well and truly opening during the last few days. And Matt hadn't done too badly either. I wasn't sure how many times he'd fucked Sally, but I was surprised he hadn't worn out his cock completely. I could see him across the room, still sleeping. Or if he was awake and wanking, he was doing it very quietly.
I looked at my phone: nearly time to get up for breakfast. I got up and had a quick shower, and by the time I was finished Matt was awake as well, sitting on the bed scratching his balls.
"Can't you leave them alone for once?" I asked, as I finished towelling myself dry, and he stuck out his tongue at me.
Anyway, after breakfast we went up to the village with our parents to get the usual boxes of fudge and biscuits for work colleagues and friends. We decided to go back to the hotel for lunch, where we bumped into Abi, Chris and Sally, and the adults all ended up in the bar having a drink.
Then they started talking about their kids. I know some parents would have been trying to get one up on each other, boasting about how brilliant their offspring were, but that wasn't my mum and dad's style at all. They just started telling a load of stories about how awful Matt and I were when we were younger, and all about the stupid things we used to do, like pushing each other into the garden pond and painting the cat pink. Then Abi and Chris started on about Sally, so before long the parents were in fits of laughter, while we kids just sat there feeling embarrassed.
"Honestly," I said, after sitting through yet another tale about me dropping some keys down the toilet and flushing them round the S-bend, "I'm not going to sit here and listen to another embarrassing story. Come on, Sally, let's go to the beach. This may be our last chance."
"Can I come too?" asked Matt, obviously fed up as well.
"Sure," I said. "Let's all get our things and go over to Granta Beach. It'll be lovely and warm by this time of day."
Matt and I went up to our room and I undressed again, before putting on my skimpiest little bikini, with the cups that aren't really cups at all, just triangles of material that cover my nipples. I could see Matt admiring it as he pulled his swim-shorts on, and I gave a little twirl and wriggled my bum at him, before putting on my little sun-dress over it.
We met up with Sally by the gate. She was dressed like me, in a sun-dress with bikini underneath, and very nice she looked too. We set off along the cliff path to Granta Beach (which regular readers will remember was where Sally and I had had some naughty fun, way back in Chapter Three). As we walked above it, we could see that it was deserted as usual. It's not surprising, really, since you have to climb down over some pretty rough rocks to get to it. Most parents don't take their kids there, which is all the better for those of us who like a bit of peace and quiet when we're sunbathing, and doing other stuff.
Anyway, we arranged all our towels and bags on the sand and stripped down to our swimming costumes.
"I fancy a quick dip first, before I put the rest of my sun-cream on," announced Sally.
"Good idea," said Matt, "I need to pee anyway."
"You filthy beast," said Sally, laughing. "Go and pee over there in the rocks if you need to go."
I wondered if Sally had inherited her mum's taste for water-sports. There was only one way to find out.