Two days ago I had my big sis (She's 24) suck my cock to completion whilst I licked her pussy, after she she came back to our parents home drunk. She lives with her boyfriend, but they'd had a huge row about how she was dressed for a night out they were having. She was dressed provocatively, but not overly. But then my sis is such a stunner anyway.
Coming into my room, she told me to keep quiet and asked me if I thought she looked like a slut. Telling her exactly what I thought. Saying she looked amazing and sooooo sexy, she smiled and then strangely offered me a blow job. I'm no geek, so looking at her dressed as she was and knowing all the guys would love to fuck her, I lifted off my quilt and took out my already rising cock from my boxers. Saying it wasn't fair unless I licked her pussy, she quickly removed her knickers, then falling over nearly, she promptly sat on my face.
It was such a spur of the moment thing, I only lasted a few minutes with her giving me such a fantastic blow job. Blowing my wad into her mouth as I fucked her face, I fully expected her to spit it out, but my sis swallowed the lot. Grinding down onto my face, she made me tongue fuck her pussy and clit hard, then climaxed all over my face.
No sooner than it all began, it finished and she took herself off to her old bedroom.
The following morning as my mum and dad were asking her what time she'd arrived, and she was telling them about falling out with her boyfriend, I entered the lounge. She gave me a huge smile and told my mum and dad, I'd looked after her when she arrived and helped to forget about her (Her words) dickhead boyfriend.
Later before my dad gave her a lift back to the flat, she lived with her boyfriend in, to collect her stuff (She's left him) she told me it wasn't a mistake and she'd enjoyed the whole thing.
An hour and half later with her clothes in bags and a few other things, I helped her move back into her old room. With our parents downstairs, she kissed me full on the lips and cupped my cock and balls through my shorts. Like it was a perfectly normal thing to say and do, still holding my cock she said "Mum and dad are out on Saturday night, I think you should use this to fuck me".
My dick got hard instantly and she knew it. Putting her hand inside my shorts and boxers, she gripped my cock and stroked it a few times. The only thing that stopped her taking my shorts off and sucking on my cock again, was my dad climbing the stairs.
Yesterday and earlier today, she's hinted with massive sexual innuendo's, that she's definitely still wants me to fuck her on Saturday night. But I'm not sure about going that far. It's one thing to have a drunken sister suck me off, but it's together a different thing to fuck her when we're both sober, even if she is a beautiful horny looking babe.