After a few hours of deep, satisfying sleep I began to wake up in a strange bed. With a jolt I realised what had happened. Last night had been my 18th birthday party at my sister's place. After everybody had gone home, we'd watched each other pissing, wanked each other off, Jan had wanked me off in the shower and then we got into this very bed and fucked.
And Jan was my sister.
I knew I'd been drinking and so had she, but I was pretty sure we both knew exactly what we'd done and were both up for it. I would soon know. I was in Jan's bed, with her, and we were both naked.
It was still pretty dark, Jan's bedroom curtains were thick and let in little light. I could make out her form beside me, laying on her side facing away from me with her bum bent back onto 'my' side of the bed. I began to wonder what she'd do when she realised she was in bed with her brother who she had fucked a few hours before.
I rolled over towards her and spooned her gently, and after a few minutes I began to drift back towards sleep. After all, it had been a long party, a late night, and a lot of sex.
Some time later in my half-awake state I felt Jan stirring. She wiggled a bit towards me and the cool flesh of her buttocks contacted my stomach sending an electric shock through me and straight to my cock, which twitched and awoke to the feel of her skin.
Jan wriggled some more and this time she maneouvred her butt so that my dick was nestled between her thighs and pointing straight at her quim. If I'd pushed I'd have entered her from behind.
"Jan? You awake Jan?"
"Mm Hmm."
"Um, you remember last night?"
"Mm Hmm."
That's all I wanted to know. She knew it was me, her brother, she knew what we'd done together, she was clearly OK with it and she'd just moved her body into fuck-ready position. So I went for it.
I snuggled forwards and spooned her properly, the whole of my front contacting the whole of her back. With the uppermost arm I reached over her to cradle a breast, with my other hand I positioned my cock at the opening to her pussy and pushed gently, just a couple of centimetres past her cuntlips, in case she recoiled and jumped away.
The feeling was electric. The morning was cool, we were naked, but her pussy was pure molten heat. I pushed a little more.
"Oooh Dave, that's sooo good."
"She pushed back to nestle me deep inside her, and put her hand over the one cradling her breast.
"Nice, little brother. So fucking nice. I want to stay like this as long as we can. First one to start fucking cooks breakfast."
"Oh I'm not moving. Might even go back to sleep!"
She pushed back at me in protest.
"You lose!" I said.
"No way. We haven't started yet. Starts...Now."
I held my dick as far inside her as I could and kept it there without forward or backward movement. Then I realised I had the upper hand in this. I could use my free hand to tease her nipples and her clit, so maybe I could get her hot enough to buck her hips even involuntarily. So I began by tweaking her nipple and pulling it straight out and letting it snap back.
"Bastard!" She moaned.
I resumed stroking her breast for a few moments then moved that hand down her flat stomach to the place between her legs. I found her clit and just put some pressure on the hood. I was no expert but I had heard too much rubbing can make the clit oversensitive and I was in this to learn about my sister's body. I felt quite sure this was not going to be our last time together and I wanted to know what she liked.
As I found a hot spot, she gasped and stiffened "Not fair. Bugger it I never thought this through."
With that she began slowly pushing her hips back and forwards to fuck my raging pole. Her pussy clasped at me with each thrust and I began matching her strokes with my own hips. My sister began to moan and her thighs trembled. She was clearly close and so I began fucking her hard to catch up.
"Yes Dave. Oh yes."
I put a knee to one side for leverage then hauled her up onto all fours, slipping out of her momentarily as I was getting between her thighs. She realised my intent and helped, reaching between her thighs to guide me back inside. Then there we were, brother and sister fucking doggy-style.
I was frantically horny. I grabbed her hips to give me leverage and pushed into my sister's cunt hard and fast. My belly slapped her arse and sent shock waves through it. She had her head down on the pillow but looked back at me with wild eyes.
"Fuck me. Fuck me hard. NNgh. Yes. Come on. I'm loving it. Come on."
I went in her pussy deep and hard and Jan held her hips firm against my thrusting. Then she began yelping each time I hit her back bumpers: "Anh Anh Anh Anh Anh..."