Note: this story carries on directly from Wrong! To have any idea please read that first. As always thanks for reading!!
*****
My wife Sophie and I sat in the taxi home with my little sister Beth. We had a great meal with our friends Ken and Meg. Sophie had warned Ken off Beth by lying that she was only sixteen. Ken being Ken, though, that hadn't really been a problem and it had been hilarious watching him flirt with her. Sophie had even faked jealousy that Ken was paying all the attention to Beth.
"Next time Ken, maybe just the two of us can go out. It's about time you put all your words into action!" Sophie had joked, although Ken was the only one who couldn't decide if she meant it or not.
And now the three of us were in a taxi. Beth was horribly drunk. She evidently wasn't used to the quantity of wine that the rest of us had been drinking. I forgot that she was still so young and not used to the things that my wife and I , in our thirties, can do. We had had to carry her out to the taxi. And now halfway through the journey things took a turn for the worse.
" I'm gonna be sick!" Beth moaned.
"Driver! Sorry, can you stop, she's gonna be sick!"
The driver pulled up at the side of the road, just in time for me to lean across my sister and open the door for her to vomit onto the roadside.
"Sorry," I repeated to the driver.
"It's ok. It happens all the time in taxis. At least she was sick outside," the driver responded.
We arrived home and Sophie and I helped Beth into the house and up the stairs to the bedroom she was staying in. We slipped off the little black dress she had bought just that afternoon, but which now stank of wine and puke. Sophie took off my sister's underwear, leaving her naked in the bed. Then we both went to our own room.
Sophie and I were both too tired for sex that night. We'd had ideas of a threesome with my sister. Sophie also admitted that she found Ken's flirting a real turn on whenever we went out with him , but that she couldn't ever imagine actually doing it with him. Then she looked at me seriously.
"You and your sister," she began.
"Yes?"
I had already told her everything that had happened with my sister. Everything.
"Well, we have our fun. We've had our threesomes in the past," she continued.
"I know."
"But there's always been rules. You know the ones yes?"
"Yes."
"So we can invite your sister around for some fun. If you want. If she wants."
"Ok," I answered.
"But those rules still apply. I don't want anything happening between you two if I'm not there," she told me.
"Sorry. It won't."
"Promise?"
"Promise," I told her.
"You can still see her. She's your sister after all. That can't be avoided. But you've had your fun with her but you're married to me. Remember that. And I'm a hot shot lawyer,"she laughed.
"I promise."
We fell asleep. The next morning I awoke the first. Sophie and I had breakfast and coffee in the garden. Me in shorts, Sophie in bikini briefs. No top. Beth eventually appeared in her bikini, looking quite rough still.
We sat there for about an hour before we heard the telephone chime. I ran indoors to answer it, hearing my mother's voice informing that they were just about to leave to collect Beth. Sophie went indoors to put on her top. Beth packed her bag then came back to join us in the garden. It wasn't long before my mum and little brother arrived. I smiled when I noticed Robbie gawping at my wife and our sister in their bikinis.
After they had gone Sophie and I had a repeat of the conversation from the previous night. That annoyed me.
I made my promises and believed that I had every intention of sticking to them as we enjoyed what was left of that Sunday. On Monday I didn't see Beth at school. I did, however, see Mrs Nicholls, the head of the physical education department.
"Mark, just the man!" she told me when she came into my classroom at lunchtime.
"Keith is sick, won't be back before the summer vacation. Is there any chance you can take the boys hockey club for the next three Tuesdays after school?"
I had done it before and in truth had quite enjoyed it. A group of about twelve boys, aged between thirteen and fifteen, for an hour after school. Easy stuff. And it kept me in the good books of the school governors and principal.
"No problem," I replied.
"Thanks Mark. Much appreciated."
On Tuesday afternoon I looked after the hockey club as promised. As I stood on the field I noticed the girls athletics club training on the track. Among them was my sister, Beth. I don't think she noticed me and I tried not to pay her any attention, my wife's warning ringing in my ears.
The same applied to my history lesson with Beth and her class on Wednesday. Although to be fair Beth also seemed to be trying to act as normal as possible. The only time she spoke to me was at the end of the lesson when she and her friend Jennie approached my desk, both asking a question about the homework I had set. Just as they turned to leave Beth reached down and stroked my hand, smiling at me as she left.
On Thursday evening my dad phoned up, asking if I might be able to come over to his house. He had bought some 'interesting' new books he thought I might like to look at. I checked with Sophie who said she was planning to visit an old friend on Sunday. Dad said Sunday was perfect.
"Your mother is taking Robbie to a swimming gala on Sunday. They'll be out till late in the evening I expect. Don't know about Beth but I'm sure she won't want to hang around if we're talking history," dad explained.
I told Sophie the plan. I added that it was just me and my dad. That Beth would be out.
"Good," she smiled.
"I can't avoid her forever you know."
"I'm not asking you to. I'm just asking you to not fuck her!"
That annoyed me. Made me feel small. I walked away, sensing that this was starting to become an issue. I'm not one for rows.
On Sunday I drove over to my parents house late in the morning. Dad opened the door wearing just a pair of shorts. It was another hot and sunny day. Dad poured me a cool glass of lemonade as we went to sit on the decking area outside the kitchen door. I took off my shirt so I was also just wearing shorts. A thin pair of dark blue soccer shorts. No underwear.
"Got the place to yourself then dad?" I laughed.
"No Beth's here. I told her you were on your way but she insisted on staying. Strange girl. She's over there," he said, pointing to the lounger in the middle of the lawn.
"Says she plans on lying in the sun relaxing. All day," he continued.
"I suppose I'd better go and say hello to her."
I walked across the lawn. As I approached the lounger I saw a bare pair of legs. As I got nearer and turned to face her I realized Beth was naked!
"Well hello big brother," she purred.
"Beth oh..."
I stood and looked at her, then looked back at our dad sitting by the house. Beth had angled the lounger so she had her back to the house. The backrest of the lounger was in the 'up' position, shielding her body from dad's view. All you could see were her legs from the knee down. She calmly spread her legs, giving me an inviting view of her shaved pussy.
"Mmmmm...Beth," I muttered.
"Dad said you were coming over. And mum is out with Robbie. Well I thought..."
I knelt down by the lounger.
"What did you think?"
"We could..." she said, reaching towards my shorts and the hardening cock inside.
"We could..." I repeated.
