Last evening I went out for my early evening run, & after about 3 miles I noticed that what had been a pleasant summers evening had turned into a black dark threatening storm. I was on the beach in the middle of knowhere when the rain started to fall, I quickly made my way to the only place that offered any shelter at all, this was a old war time defence post just at the edge of the sand dunes. I stepped into the darkness & stripped off my t-shirt using it as a towel to dry myself down. It was then that a voice came from out of the back of the hut, "Hi" don't mind us". I let out a "fucking hell you scared the life out of me". Sorry the Guy said, but how do you think we felt with you just running in here out of the blue, Kim nearly bit my cock off. It was then that I realised That I had interupted a heavy sex session, as Kim had her blouse un-buttoned & a lovely pair of tits where hanging out of them, these were topped off with lovely brown hard nipples. The man (Roy) was stood with his shirt on but no trousers, his arse & semi fat cock where on full view & neither he, nor Kim made any attempt to hide their nakedness. Upon assesment of the situation I fely highly embarrassed & a little uncomfortable, stood there in just my shorts staring at a couple I had just interupted having sex. I think I should go I meakly said, staring out into the black torrents of rain. You can't go back out in that Kim said kindly, especially as you appear to be enjoying the view! & she ponted to the large bulge in my running shorts. She quickly came across & said to Roy "do you mind if I welcome him into our Sex Den darling". Not at all he replied help yourself, I'm sure our new friend wont mind. Quick as a flash Kim slipped my cock from my shorts & expressed how nice it looked. She remarked how trim my hair was & how she liked a man who kept his balls smoothly shaved. I replied that I have had a Brazillian for several years now & that It makes me feel quite sexy & that it makes my cock look bigger. It looks big enough for me Kim said as she gently wanked my cock. She licked my cock end cleaning the pre-cum with her tongue, she then said to Roy, "why don't you come & join in too" At that Roy moved closer to us both, as he moved forward he wanked his cock & offered it to Kim to suck. She swallowed him down to his balls & as she did this he let out a groan, this was to much for me & I moved around behind Kim & entered my cock into her smooth wet pussy. She grunted, but still sucked on Roys cock while I banged my balls into her. Roy remarked how wonderful it was to have his wife "spit roasted" I soon emptied my cum into Kim & as I thrust hard into her She stopped sucking Roy & started to wank him furiously. He soon came & he spunked across her breasts. She then used his cock to rub the spunk int her tits. She then offered me her tits & ordered me to lick them clean. This I did with the utmost pleasure. Roy was still hard & he lifted Kim up in his arms & sat her down on his cock, he then preceeded to ride her whilst I stood & wanked. They both came in a frenzied orgasm of thrusts, screams, grunts & groans. I also came shooting what little spunk was left in my balls onto the floor. We all got our breath back said our thank you's & good bye's & I poped on my t shirt & went on my way. What a night.