Kate's Full of Surprises

This was the reaction from both me and my sister Kate when mum told us the plan. It was our gran's 80th birthday and we were going to stay with her. All of us. For a whole week.

Our gran lived with our grandad in a cottage by the sea. In fact it was right overlooking a windswept beach in Scotland, that was normally deserted. Her house was quite small, only two bedrooms. When we were kids we would go with mum and dad every summer, sharing the second bedroom. Mum and dad would have the bed, while me and Kate would share the fold out sofabed. Not a problem when we were kids.

We hadn't been there about five years, not since I was fourteen and Kate twelve. That time it began to seem a bit awkward, sharing a bed as we were both at that difficult age. Now I was nearly twenty and Kate had celebrated her eighteenth birthday about two weeks ago.

Also me and Kate didn't always see eye to eye. We could be great friends but also could fight like cats and dogs, or sister and brother!

In fact we were not on good terms right now and the car journey seemed to take forever, with us both in the back, in silence while mum and dad tried to encourage us into being nice to each other. No chance.It was a relief when we got to gran's.

So mum and dad got the bed and we pulled out the sofabed, as usual. It seemed smaller than I'd remembered but I also remember it being very comfortable.

That night mum and dad went to bed first, at about 11.30, I followed about thirty minutes later. I cleaned my teeth then went to the bedroom, stripped to my boxers as usual then climbed in the bed. Kate appeared about an hour later. I woke up as she got into bed but my ''goodnight'' was met by a ''not with you here it won't be'' reply.

So I was quite surprised to wake up an hour or two later to find Kate cuddling me. Her arms were wrapped around me and I could feel her lying tightly against me. So tightly I could tell she was wearing a bra under her t shirt. However I just smiled and gradually fell back to sleep.

When she got out of bed next morning I also noticed that she wore no shorts under her shirt, just a pair of knickers.

''You were cuddling me last night,'' I teased her later that morning.

''No I was not. In your dreams you little wanker,'' came her charming reply.

The next night I stayed up slightly later, going to bed about ten minutes after Kate. Mum and dad were already in bed, so I stripped to my boxers and climbed in next to my sister.

''Goodnight everybody,'' I called.

''Goodnight scumbag!'' replied Kate.

''Nice to see you two are getting on slightly better now,'' said dad from their bed, a bit sarcastically I assume.

I woke up in the middle of the night. Immediately I awoke I froze. Again Kate was cuddling me. This time however I realised her right hand, that was doing the cuddling, was inside my boxers and resting gently on my soft cock! How long it had been there and whether it was there on purpose I do not know. But as soon as I realised where it was my cock started to stiffen. What to do? I was lying in bed next to my sister and her hand was resting on my erect penis. And we were sharing a bedroom with our parents!

But the next thing left me even more shocked. As my cock stiffened it now caught Kate's attention and her hand started to slowly stroke it. Was she awake or dreaming? She gently carressed my balls before returning to my cock, stroking and squeezing it. I was confused, but like any boy I was starting to enjoy the feeling. I was being jerked off by an eighteen year old girl. The only complication being that she was my sister, our parents proximity and this was our grandparents house. No matter how much I was getting turned on I kept reminding myself of the situation, thinking that the reality would rid me of my erection and my horniness. Yeah right!!

''Kate. What the.....?''

''Shhh. Do you want to wake mum and dad?'' she whispered.

So I lay there while she stroked my boner. And then... Oh no I'm cumming. I wanted to scream but that would not be the best thing to do. But I was gonna cum! Her strokes got firmer and faster, as if she could read my mind. Well she probably guessed. I grabbed hold of the bed sheets as I suddenly exploded shot after shot of cum into my boxers. Kate took her cum soaked hand out of my shorts, wiped it on my chest then kissed me on the cheek.

''Goodnight,'' she whispered as she kissed me.

I could not really sleep that night. What was that all about? Did I enjoy it? Yes, but...

''It's a bit smelly in here. A bit sweaty. I'll open the window.'' So said mum that morning. Her and dad got up and went to make tea. As soon as they had gone Kate jumped out of bed, giving me a flash of her knickers as she ran to the bathroom. I didn't get a chance to talk to her till much later that morning.

''About last night,'' I began.

'What?'' she asked.

''You know.''

''No.''

''You er, you wanked me.''

''No.''

''You did, honest.''

''You're sick.'' And she avoided me all day after that.

The next night. I went to the bedroom. Confused. Mum and dad in bed, reading. Should I wear more clothes. I was going to, but.... But a part of me was secretly hoping for a repeat. From my sister? We don't really like each other. I've got a girlfriend. But she never wanks me. Kate's got a boyfriend. Lucky bloke I thought. So I stripped to my boxers, got into bed. Kate followed shortly after. She came into the room, wearing that same long t shirt. She got into bed.

''Goodnight,'' I said.

''Goodnight fucker!'' was her answer, quietly under her breath.

I lay awake for ages, nothing happened. She seemed to be asleep. Dad was snoring. All very normal. Eventually I fell asleep.

I woke up much later to find Kate cuddling me, her hand resting on my soft cock. I got erect almost instantly and after about 5 minutes she started to stroke. Dad was still snoring, mum softly breathing a little tune in her sleep, across the room. Kate stroking my shaft and cupping my balls. Then, she very quietly and carefully slipped under the covers. She moved down to my waist and lightly kissed my cock and my balls. She licked them and then she put my member in her mouth, going further and further and she began to suck the life out of it. I tried not to make any noise but I was in heaven. Again I gripped the sheets as I began to orgasm, and then I came into her beautiful mouth, filling her up. Oh this was too much. I was falling in love, and lust with my very own sister.

She silently moved back up the bed and moved on to her back. Then she took my hand and moved it to her body. She slipped it under her shirt and guided me to between her legs. She was not wearing any knickers! The tramp. I needed no encouragement as I felt my way to her wet pussy and slipped my fingers in between her moist lips, grinding her on and on. She tensed and let out a soft but quiet moan as she shuddered to her own orgasm. Then she sighed, kissed me on the cheek and rolled over. Again I hardly slept the rest of the night, too shocked and too excited. I tried to get a feel of her arse and her tits but she slapped me back.

''Morning kids. Sleep well?'' said mum as she moved to the curtains the next morning. I grunted and Kate rubbed her eyes. Mum and dad went downstairs. As soon as the door closed behind them I pulled back the covers. Kate smiled as she pulled up her shirt to reveal her neatly trimmed bush and the most gorgeous pair of tits I had ever seen. I had never really thought of her tits and what they looked like but here they were. Not too big, but enough to get a good feel. Nice pointy erect nipples. She reached into my shorts and started to stroke my cock as I sucked on her nipples. I was just beginning to lose contol when I heard the door handle twist, followed by dad opening it and bringing us a cup of tea each. Just enough time to pull the covers over and act normally. Just enough time for Kate to take her hand off my penis and reach out with the same hand for her tea.

But after breakfast she went back to being Sister Kate, all moody and unpleasant. Not the cocksucking Kate from the bedroom last night. We were never alone that day, and then it was bedtime. Unusually Kate was first to bed, followed by mum and dad. When I got to the room the light was on. Dad was asleep, but mum was reading. Kate was lying in bed, covers up to her shoulders, just her arms exposed, holding up the book she was reading. I took off everything except my boxers, and went to the bed. As I pulled back the covers I was amazed to see that Kate was naked. Thankfully I had pulled the covers back and up so mum was none the wiser.

''Kate, be an angel and turn off the light,'' said mum.

''But... but mum!'' Kate said, clearly panicking.

''It's all right' I'll do it,'' I said as I got up.

We lay in bed, waiting for signs that mum was asleep. Kate nude, me just wearing boxers but erection ready to be called into action.

After an agonising hour Kate made the first move. She moved her hand into my boxers and onto my penis. I helpfully pulled off my shorts so I was also naked.

''I'm in charge, ok? Just do as I say,'' whispered Kate in to my ear. She stroked my cock and I began to finger her, and it wasn't long before she was pushing my hand to go further and faster before she gave in to her first orgasm. Then as with the previous night she slipped down under the covers and sucked me off, my cum filling her mouth and spewing down her throat. All this we did silently and with as little obvious movement as possible, to avoid waking our parents.

We lay in each others arms for a while, both awake but content in our thoughts. It wasn't long before her girly fingers, my sisters fingers that I had held on the way to school when we were so young, were once again wrapped around my cock. Willing it to come back life. And it did, not needing much encouragement. I quietly sucked her tits while she fondled my now sore throbbing dick. She climbed onto me and straddled my cock, but as she moved to place my penis into her dripping cunt, she sat up and the covers fell off. Luckily the room was very dark. This being a quiet cottage by the sea there was no streetlights outside. I doubt our parents would be able to see anything in this light. At least I hope not! My penis was now inside her, engorged by her fanny. She slowly rose up and down, silently fucking my cock. She didn't care about the lack of covers, about the fact that she was naked and straddled over her naked brother, about the fact that our mum or dad could wake at any moment, and switch on a torch. She was having sex, and she wanted to cum and nothing else mattered. She got more wild and started to thrash about as I pounded my boner into her. Our fucking became frenzied as we ignored the reality of our surroundings and we came at the same time. My hot juices exploding into her vagina as she let out a loud moan. We lay down in each others arms and pulled the covers over.

A minute or two passed before a voice broke the silence..

''Kate are you ok?''asked mum.

''Oh mum sorry did I wake you? Sorry I have got cramp in my left leg and it's been killing me.''

''Ok well try and get some sleep.''

Mum and dad were up first next morning and when we were alone we kissed, but then got dressed and the day was normal with Kate acting cold to me.

The next night was the last night at gran's, and Kate told mum and dad that she wanted to watch the late night film on tv. They said ok as they left the room to go to bed.

We sat watching tv together until we were sure everyone was asleep, then Kate left the room. When she came back into the room she was naked!

''Where are your clothes?'' I asked.

''Upstairs, in the bathroom,'' she replied in a matter of fact way.

I asked what if anyone came down but she waved that away as if I was being stupid.

I stood up and moved towards her, and we started to kiss, slowly at first but then more passionately. She began to undress me and once we were both naked we fell onto the sofa. My tongue and my hand carressed her nipples while she stroked my throbbing penis. I got on top of her and she opened her legs wide as I licked her cunt, it wasn't long before she came for the first time. Then I moved down and slid my cock into her, thrusting as she moved her hips against me. We were fucking wildly and we came together, my juices flowing into her vagina.

We lay together in each other's arms, naked and content. Before long we fell asleep and it was with a start as I was woken by the first rays of sunlight streaming in to the room. I nudged Kate awake and began panicking. Had anybody come down while we were lying there? Kate calmed my fears by simply reaching down and stroking my cock, which soon resonded by getting hard. Soon we were fucking again, the chance of being caught making it all so much more exciting. Once again we both came, Kate about three times.

I got dressed and led the way upstairs as Kate tried to sneek to the bathroom to get her clothes.

She got dressed in the bathroom, putting on her shirt and knickers before deciding that what she wanted more than anything was a walk on the beach. It was five in the morning but it was a beautiful morning. We sneeked out the house, down the path to the beach. We walked to some rocks till we were out of the sight of the house.

''Fancy a swim?'' asked Kate, as she ran towards the sea, ripping her shirt and knickers off.

I undressed and ran after her into the water. We splashed around for a while before going back on to the sand, where we lay in each others arms for about 30 minutes. Then I began to stroke her erect nipples and we ended up fucking right there in the sand. After we had finished we went back into the water to wash the sand off then lay side by side to let the sun dry our bodies.

''Are we still going to do this when we get home?'' I asked nervously.

''I don't know. We will see. I don't want to lose my boyfriend but I love the sex with you,'' she replied.

''Me too. Maybe I can be your fuckbuddy!'' I said.

As we lay there laughing, naked, a dog ran round the corner towards us, shortly followed by our grandfather.

''What the.........!'' he shouted as he saw us lying there.

We had a bit of explaining to do.