My father in law Ian is a male slut and one I'm desperately trying to resist. That's because after dropping my mother in law and my husband at the concert venue, I drove the twenty minutes back to my mother and father in laws house, to pick up my ticket I'd left on their sideboard.

We'd been out for just over an hour as we'd eaten first. Walking into their lounge I came face to arse if you like, with Ian's arsehole as it was hammering up and down. He was on top of a young female around my age. They were both naked and I stood watching him fucking her as she moaned loudly.

It'ws not easy to admit I became incredibly turned on, but I did, specially when they realisd I was there. Ian casually got up and turned around. I know some people exagerate when they talk about male genitalia, but I'm not when I say Ian's cock is around ten inches long and almost as thick as my wrists.

He spoke to the girl and just as casually as he was, she dressed right there in front of me. Ian stayed fully erect and stood waiting until she finished putting her clothing on. She stepped up to him, whispered in his ear and stroked his massive cock at the same time. Smiling at me as she passed, she said "Hopefully I might see you again".

It was so awkward, but not for Ian it appeared. Because as soon as she went, he walked over to me, his cock bouncing as he walked, put his hands on my shoulders and put his mouth close to my ear. The words were a mixture of pure temptation and revulsion. Ian asked me if I'd like to finish whay they'd started.

I'm not here to say we had amazing sex or to say I told him where to go. What I did do was take hold of his staggeringly large cock, as if it was the most natural thing to do with your father in law, and began to masturbate him. Ian came all over my hands and the floor, but not before he'd begun to feel my breasts through my top.

Joining my mother in law and husband later, I don't remember the concert at all. As all I could do was think about Ian and his wonderful cock.

Now my problem or temptation, depends which way you look at it. My husband has arranged for Ian to finish off the work in our kitchen next weekend (9th and 10th Novenmber) My husband will be be working away that weekend, so Ian and I will be alone the whole weekend as he's staying over. I honestly don't know if it came down to it, if I could resist his charms and that awsomely big cock. I've already dreamt of Ian fucking both pussy and arsehole and after waking up this very morning, playing with my clit imagining Ians cock fucking me into orgasm after orgasm.