This is a true story about my wife’s encounter with a night watch security guard who was working on a nearby construction site. We would often walk our dog in an adjacent field next to the construction site and noticed that the portable cabins being used by the contractors and site security team, were popular locations for “biffo” our dog to have a poop and a wee alongside. One particular evening just after dusk while I was out walking “Biffo” alone, I happened to look in one of the windows of the cabin that “ Biffo” was sniffing . I was a little shocked at first, but then intrigued to see one of the night watchmen, his pants and boxer shorts round his ankles and masturbating his very thick eight inch cock over an adult magazine. I didn’t watch his whole performance as I did not want him to know that he’d been discovered by some random dog walker and his security credentials were under question. As soon as I arrived back at home I told Anne what I’d just witnessed and seen, she wanted to go back and see if he was still doing it but I managed to persuade her that it would not be the first or last time that he would be playing with himself, rather than doing his security job; and there was an opportunity to have some sexy fun with him, as he would not want his employers finding out what he gets up to in the cabins. The following evening Anne had a shower and got dressed up in hold up sheer black stockings, a loose flowing dress and sling back heeled shoes.. She really gets turned on by being a voyeur on guys as they masturbate, her favourite pastime on the internet is finding guys with nice cocks to put on cam wank shows for her. She rewards them with the occasional photo and sexy e-mail thanking them, but how would she reward the real thing doing it just feet away from where she’s standing. I was both excited and nervous as we left the house at dusk hoping that he would be doing a repeat performance of the previous evening. Anne is 5’ 8” tall, forty seven years old, a buxom size 14, with shapely long legs especially when they are clad in nylon stockings, as we approached the cabins she admitted that she was slightly moist at the prospect of seeing him with his erect penis in his hands and I took the opportunity of putting my hand up underneath her dress to feel her juicy damp crotch material. Rubbing my fingers into it to get her sexy pussy scent all over my finger tips. We walked quietly up to the cabin window and looked inside, as we expected the same guy was masturbating over a reader’s wives magazine. He was aged around fifty with short grey hair, clean shaven and around six foot tall if he was standing up. I knew that he was the type of guy that Anne would find attractive and I was not wrong, as she glanced over at me and said, “He’s gorgeous, feel how wet he’s made me”. Again I explored up under her dress pulling her thong material aside to finger her sopping wet pussy hole, she was oozing sex juices and I fingered her opening easily sliding fingers and thumbs in and out. We became his unknown voyeurs as he rubbed and wanked his very big cock, I was not watching every moment as I was busy finger fucking and kissing Anne’s labia lips and clitoris.. Until she climaxed letting out a little “Squeal” as her orgasm squirts flooded my hands and greedy mouth. She had alerted the guy of our presence and he immediately stopped masturbating and pulled his pants up, we did not have time to leave quickly or hide as he opened the cabin door in under thirty seconds flat. “ If it’s okay, we were having some sexy fun because of you” I blurted out as he shone a torch on the pair of us Luckily his reaction was one of relief, as he thought we might be his supervisor coming to check up on him, he invited us to join him inside and watch at close proximity… He introduced himself as Phil and told us he’d been divorced for about ten years and often used soft porn magazines to fire his imagination when he wanted to masturbate. Anne lifted her dress up and showed him her stocking tops, as I spoke saying, “What about doing it in front of the real milf of this area, my wife Anne”? He dropped his pants again and still had a semi erect cock, which he quickly resurrected with his fingers. He looked at Anne bending over in front of him, showing off her stocking clad legs and teasing him with her gyrating hips. I moved behind Anne and fingered her wet pussy lips open and then I encouraged Phil to do the same, as he began to probe and explore between her thighs, I began to fondle and rub her breasts and nipples through her dress. She was very turned and aroused by this spontaneous MMF encounter and was now carried away with her own sexual pleasure. Meanwhile Phil had dropped down onto his knees and he was kissing and licking her bum and in between her legs, as she gently rocked herself back and forth onto his eager mouth. She was soon climaxing again, squirting her orgasm juices over Phil’s mouth and face. I knew that he had enjoyed it when he called out, “O that tastes lovely, yes very, very sexy” Phil stood up and asked, “Can I fuck her”? “Unfortunately not without a condom you can’t” Anne answered his query and then added, “But I am prepared to gob-job you if that’s okay”? Of course it was okay and Phil sat down in the chair as Anne bent over his lap and began kissing and circling her tongue around his swollen glans, her hands rubbed and massaged his balls gently squeezing his heavy cum sacks and then probing with her finger tips around his anus. The sight and sounds of Anne slurping on Phil’s cock made my cock very hard and throbbing, I just had to get behind Anne and slide easily into her very wet love hole, thrusting in deeply feeling her wet warmth around my cock, as I began to fuck her in a steady rhythm. I could just still see the top of Phil’s face and his eyes were closed, as he enjoyed the ecstasy of her oral adoration. I know how good she is at doing this so could appreciate the sensations that Phil must have been feeling from her lips, fingers and tongue; and it was certainly showing upon his face. I began fucking her harder and more vigorously forcing her forward onto Phil’s cock and moving her whole body with each inward thrust. I could not hold back any longer and had to erupt deep inside her, as she continued to suck and tongue Phil’s cock. Pulling out of her soaking wet pussy hole I moved alongside and watched as she orally worshipped Phil’s enormous erection. I put my hands on Anne’s head and ran my fingers through her hair, encouraging her to go slower with her sucking upon Phil’s engorged bulbous helmet. She did this and then lovingly she sucked and rubbed his cock, as I guided and directed her movements holding her hair. She, “Gulped” as Phil thrust himself upwards into her open mouth, he was emptying his load and she was dutifully swallowing it all, as I urged her to keep her mouth around his cock until he’d finished. Afterwards Phil wanted our number and expected some kind of regular fun but we explained that most of our fun is just one off encounters to spice up our already exciting sexual life’s