Sometimes a family trait misses a generation and that's true in our house. Both my sister and I are night owls while our parents are usually in bed by ten. Many years ago, they converted the basement into their bedroom so that they could retire early and get some sleep.

"What're you doing?" my older sister Ruth asked.

She had showered earlier and put on her night wear, tonight it was one of my old pyjama tops. She plonked herself down on my bed and put her knees under her chin showing me all her slim legs and white knickers.

"Just finishing off my English home work," I replied swivelling around to look at her. "I thought you were out tonight?"

"Yeah, I was," she said, "But Billy called it off."

"Oh," I swivelled back to carry on with my task.

Billy was her current boyfriend, a member of the school soccer team.

"Yeah, I was looking forward to some action tonight," she mused.

That's my sister, a good time girl.

"Never mind," I sympathized.

"I may go and play with my vibrator for a while," she said half to herself. "Not the same as a good hard cock though."

"Yeah, I suppose," I said only half hearing.

My sister and I were very close, having spent at lot of our growing up years like this, for our parents would go to bed so early and leave us all alone.

"You want to play something?" she asked.

"Yeah, sure, just as soon as I've finished this," I replied. "What time is it?"

"It's still early," she said cheeking her watch, "It only just after eleven."

As nether of us would ever think about going to bed before one or two in the morning, we had lots of time to play a game or two. I re-read my homework one more time then switched off the computer with a sigh.

"Fucking great, that's done," I said smiling at my sister who was now lying down on my bed. "You're looking good."

"Thanks," she replied smiling up at me.

She raised one long leg and then the other and giggled.

"Fucking best pair of legs in the school," she said.

"You've got that right," I agreed.

"My tits could be a little bigger though," she observed cupping herself through her top.

"Nothing wrong with your tits," I said.

She said nothing but just looked at me.

"Fucking 'ell, talking with you is getting me hot," she snapped.

"Go and play with your toy for five minutes," I suggested, "while I find a game for us to play."

"Yeah, ok," she said jumping off the bed. "I fancy that car racing game on your 'playstation'."

"Right, I'll dig it out," I said.

It didn't take long to set it up, for my playstation was already plugged into my TV. With the steering wheel and pedals also quickly plugged in I was soon zooming around the virtual circuit.

"It's not the same," Ruth said as she joined me after fifteen minutes.

Her top was still unbuttoned and I noticed that her knickers were missing; in fact under her loose top she was naked.

"Come on, let's play," I said moving so she could sit behind the wheel.

"I'd rather play with you," she said with a giggle.

"Stop it, sis," I said, "you know we mustn't."

"Yeah, but it was so much fun last time," she giggled. "And I'm still hot."

In the past I had succumbed to her charms a few times, god, I'm only human.

"Come on, little brother," she said, her voice slightly breathless.

She slipped her top off and she just stood there naked.

"You know you want to," she giggled.

Her hands cupped her small tits as she spoke and suddenly there was a large lump in the front of my jeans.

"Look, we mustn't," I gulped.

"Look, you see to my needs," she said with a fixed smile on he face, "and I'll do whatever you want."

"Look, sis," I said backing away from her.

It was true I had asked her to do things for me in the past, like be my model or suck me off.

"I'll let you take pictures of me all day, if you want," she said advancing towards me. "Or I will suck all your mates' cocks."

With my backside hard up against the computer table I had nowhere else to go.

"Here, give me your hands," she said.

She took both my hands and placed them on her tits.

"Now, that feels nice, doesn't it?" she leered.

There was no doubt that she had a very nice and sexy body but she was my sister and we were not supposed to do these sorts of things. Her own hands had been busy hooking out my hard cock from my jeans.

"There, all ready for me," she said gently stroking me. "Let's put it where it'll do the most good."

Pulling me towards my bed by my cock, soon we both fell together and her legs opened to receive me. Without any help from me she fed my hardness into herself with a loud groan.

"Fuck me, that feels so nice," she groaned.

Her hips moved against me, slowly at first.

"Come on, brother, fuck me," she urged.

I was too far gone now to care about what I was doing, so I thrust into her hard.