Wrong! Ch. 02

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More adventures of married teacher and his teenage sister.
10.5k words
4.67
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Part 2 of the 2 part series

Updated 10/27/2022
Created 06/25/2014
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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.

I sat forward and placed my hands on the inside of her legs. Then I bent down and placed my head in between her legs, my tongue reaching for her juicy cunt lips. I began licking her vagina.

"We could...oh god...oh yes...we..." she stuttered.

Beth always makes a lot of noise during sexual activity. Even my wife had commented on this. I put my hand up and placed it on her lips, beckoning silence as I licked her out. Beth's hands reached for my shorts and pulled them down, wrapping her fingers around my erect cock.

"Mmmmm...I've missed this," she said as she began stroking my cock.

She managed to keep the noise down as I licked her to her orgasm. As soon as she'd cum I stood up, quickly pulling my shorts up before dad looked over.

"Later..." I said as I walked away, aware that my thin shorts made my erection very obvious.

I sat down by dad.

"That was a long hello," he commented.

"Sorry. Just talking about school," I replied.

Dad and I sat and chatted for about thirty minutes. Out of the corner of my eye I kept glancing over to my sister's bare legs, hanging over the edge of the lounger.

Shortly after, Beth stood up her and walked toward the house. To my amazement she was topless, having only put her bikini briefs on. She walked slowly toward the house, in full view of me and dad. She walked through the kitchen door. I tried not to make it obvious I was looking, occasionally checking on dad, who I could tell was looking. After my sister was out of sight inside the house I looked down at the magazine I was reading.

"That sister of yours. She has no shame," dad piped up.

"Mmm?"

"She always seems to walk around in next to nothing."

"Really?"

"Yes. Your mother never displayed such a lack of modesty. Nor your sister Kate when she was that age," he muttered.

"I'm sure she'll grow out of it. Just a phase she's going through," I assured him.

"Maybe you can have a word with her. She seems to listen to you."

"Dad, I'm already her teacher at school. I don't think she wants me to be a teacher here as well."

Silence for about three minutes.

"Nice breasts," dad suddenly said.

"Huh?"

"I said, nice breasts."

"What?" I answered, hoping that by acting dumb this conversation wouldn't happen.

"Beth. Nice breasts."

"Really? I didn't notice," I lied.

"Well she just walked by with them on display. It was hard not to notice."

"Dad."

"Well," he laughed.

"Where are these new books?" I asked, trying to change the subject.

"Similar to your mother's. Maybe a little smaller. But still a pleasant sight," he continued.

"What?"

"Your sister's breasts, dummy!"

"Dad! She's my sister. I don't want to talk about her breasts. Or think about them, for that matter," I protested.

"Alright! Don't get so defensive. I'm just saying," dad shouted back.

"Ok. Can we drop it?"

"If she chooses to walk around with her little titties on show, us men are going to notice. Sister, daughter, whatever. Tits are tits. I just said that they look nice," he complained.

"Ok dad. Sorry. It just seems a bit weird."

"You're the weird one if you pretend not to notice. I saw you looking, ok?"

"I'm sorry dad. It's just that...well you know...being a teacher...her teacher...breasts are a subject best ignored," I explained, trying to diffuse the situation.

"I know son. I was just saying. Anyway. Yes, these new books. Come inside I'll show you. It's getting a bit too hot out here, even for me."

We went inside and sat in the living room. Dad brought in some sandwiches for us to eat for lunch. About two hours later our reading was disturbed by Beth coming in. She was wearing a flared short white skirt, just covering her ass. And a cropped loose white top. Just covering her breasts.

"Hey guys! What'cha doing?" she laughed.

"Girl! Don't you ever wear decent clothes?" smiled dad.

"Dad I'm eighteen!"

"Your mother never displayed so much flesh at that age!" he protested.

"Dad!"

"Nor Kate," he continued.

"Well we all know I'll never be perfect like Kate," she snapped. It was a comparison she'd had all her life. In that respect I did feel for her.

She flopped down on the couch next to me.

"Hey big brother!" she joked.

"Hey sis" I joked. I never called her sis.

She sat next to me, saying nothing as I continued to read one of the books dad had shown me. Eventually she let out a big sigh.

"What's wrong Beth?" I asked.

"Bored. I wanna do something," she moaned.

"Like what?"

"Something."

"Beth, I did tell you it would be like this. You chose to stay home. Why don't you go back in the garden or something?" dad scolded her.

"Something."

She sat quietly for a while then began messing around. First a gentle kick to my foot. Then a prod in the knee, or a stroke along my shin. I ignored them all. Until a poke in my ribs got me.

"Ow!" I exclaimed.

So she did it again. I tried to poke her back. Dad started laughing.

"This reminds me of when you were younger. You would be about nineteen or twenty. Beth was about five or so. You would fight and wrestle all the time," he said nostalgically.

"Bit one sided at that age?" I joked.

"Well I think you let her win most of the time."

"I'd win easily now," she laughed.

To prove her point she began trying to prod and tickle me. Our arms and hands flew in all directions as we messed about. Eventually she stopped and sat still.

"Give in already?" I joked.

Without warning she jerked her hips into me, barging me over onto the couch. I got back up and tried to push her over but she fought me off. This carried on for a few minutes as we each tried to push each other off balance. Beth trapped my legs by wrapping hers around me and with one giant lunge pushed me onto the floor.

Dad clapped his hands in delight as he watched us.

"Just like the old days," he laughed.

Beth hopped off the couch and sat on my lap, pinning me in place. As she tried to pin me down I reached up and tickled her under her armpit causing her to lose balance. Now it was my turn to go on top. I held her arms by her sides and sat on her legs. As I tried to tickle her armpits again she threw her arms up in self defense, causing her top to ride up and expose her breasts. This made me lose my concentration and she pushed me back. She climbed back on top of me. I felt her naked and wet pussy on my stomach. I looked down and observed that all our wriggling had caused her skirt to slip upwards so the elastic was up by her navel. She obviously wasn't wearing any panties.

She tried to tickle me but I fought her off. Again her top rose up, exposing her tits. I looked across at dad who was watching us in hysterics.

Once more I made a grab for her armpits, instead taking a hold of her top and pulling and stretching it up to her neck. She applied more pressure and then leaned back to tickle underneath my feet. This caused her bare breasts to jut out even more. She also lost balance and I pushed her off me. She fell onto her back and I climbed on top. I also became aware that I had an erection and that my cock was causing a fairly obvious tent against the thin material of my shorts.

Beth continued to wriggle under me, trying to slide down past my legs. This had the effect of causing her skirt to rise up even more. The elasticated waistband was now up just below her breasts. I looked up at dad and knew he could see everything. Her tits and pussy and my tent in my shorts.

Beth wrapped her legs around the back of mine and applied pressure. This was actually quite painful and caused me to release my grip on her. She slid out from under me and pushed me over. She climbed on top of me again.

"Good move Beth! Classic move, well done!" exclaimed dad.

Beth's naked ass pressed against my stiff cock and she leaned over me, holding my arms up above my head. Her tits were just inches from my mouth and if we had been alone in the room I wouldn't have hesitated to lean forward and lick them. As it was I could feel her wet pussy on my skin and guessed this was turning her on as much as it was me. She slid down me a little, pressing her tits against my chest and causing her vagina to press against my tent in my shorts. With just a small adjustment I could slip my cock out of my shorts and inside her and fuck her. I guessed she knew what she was doing and didn't mind. But dad was there watching.

Beth carefully rubbed herself against my cock and I knew that I would cum soon if she carried on. I pushed upwards and she fell off.

"A tie I reckon. Come on you two that's enough," declared dad.

I stood up, the tent in my shorts clearly visible. Beth stood up and without adjusting her clothing she shook my hand, before heading out the room. Dad and I watched her bare ass as she left.

Eventually getting my breath back I sat down and resumed reading. I heard the shower running upstairs.

For the next half an hour or so the house was silent. Dad and I sat in the living room, both engrossed in books. I realize that I'm a lot more like my father than I care to admit. I hope that I'm not quite so eccentric. Then I wonder where having sex with your sister comes on the eccentric scale. Quite high up I imagine!

I'd heard the shower stop. Beth had left the bathroom and walked along the hallway to her bedroom, closing the door behind her. I'd heard all this. Then I heard her coming down the stairs and approaching the living room. Sure enough the living room door opened and Beth appeared, her hair still wet and her body (well most of it) wrapped in a dark red towel. She smiled when she saw her big brother and her father.

"Honestly you two are so alike," she laughed.

"Err, thanks?" I responded.

"Mark, can you do me a favor? I've been asking dad for ages but he always finds an excuse to avoid doing it," she asked me.

"Depends what it is. Maybe there's a good reason dad keeps putting it off," I joked.

"Ha Ha you're so funny. No there is a box on top of the wardrobe in my room. It's too heavy for me to lift down. I want to sort it out."

"Ok."

"I kept meaning to ask you when you were helping me with my studies but..." her voice tailed off.

"Oh yes I remember now. Sorry," dad suddenly realized what the conversation was about.

"It's ok dad. Mark can do it."

"I'll be up in a minute. Just let me finish this chapter," I added.

"Take your time brother dear."

Beth went into the kitchen and then came back in and sat next to me, eating some fruit, still wearing just a towel. I looked down and noticed that her pussy was just visible at the bottom of the towel. I finished my chapter and stood up. Beth led the way out the room and I followed her upstairs. As she climbed the stairs she let her towel drop, revealing her naked body. When she passed the bathroom door she threw the towel into the bathroom and carried on walking to her bedroom.

Inside she pointed to the box on top of the wardrobe, but I was hardly paying attention, more interested in the naked eighteen year old girl standing in front of me. She saw where my eyes were looking and smiled.

"Alone at last," she whispered, climbing onto her bed.

I pulled down my shorts and stood before her equally naked. I stepped onto her bed and lay next to her. We began kissing, touching each others bodies.

"You know my wife has suggested I keep away from you," I told her.

"Keep away?"

"As in, don't have sex with you."

"Oh."

"Oh," I repeated.

"And what did you say?" she asked, stroking my now erect cock.

"I promised I would."

"You're not very good at keeping your promises are you?" she teased me.

"Terrible."

"What should I do with a brother who is so bad at keeping promises?"

"Punish me."

"Mmmmm, you're obviously a very naughty boy," Beth added, clambering over my naked body and lowering herself onto my lap.

"Extremely naughty," I agreed.

"And a dreadful husband to your poor sweet wife."

"Shocking."

"And do you know what really makes me mad at you?" she asked as she lowered her cunt onto my shaft.

"What's that then?" I asked.

"You're the worst kind of big brother," she smiled, rising and lowering herself onto my cock.

"Mmmmm, the worst."

"I'm such a sweet innocent little schoolgirl and you come along and use me for your own greedy pleasure," her pace picking up.

"What a pig!"

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