We had been having some work done at home and there were just a couple of jobs left to complete. The plumber rang last Saturday morning to say he'd be round in about an hour to finish off the kitchen sink, so that was thoughts of early morning nookie well and truly off the agenda. My wife dived in the shower, dried herself off, put on a thong and headed off downstairs to clear the kitchen so it was fit to be seen. My wife is early 50s, slightly overweight at a size 14 thanks to a couple of kids, but with a size 36F chest and huge nipples that just love being sucked. To me, and other men who ogle her round the pool when we're on holiday, she just has a body that's built for shagging - curves in all the right places and those hat peg nipples. As I was getting ready, I saw the plumber arriving, early, so shot down to let him in. I just told him to go through to the kitchen and crack on with things whilst I finished getting ready (in fact I stood just outside the door listening). My wife was bending over the dishwasher, loading it, and the plumber just said "nice smile" at the sight of her arse crack. As that's exactly what I would have said, she thought it was me so gave a little wiggle, which had not just her arse but also her tits swaying nicely. Not too surprising that the plumber took this as a sign of encouragement and moved in closer to touch her arse - "not now you pervert, the plumbers due" she said. "Ah, actually I am the plumber" he replied, at which point she swung round and nearly knocked him over with her tits. She just stood there, frozen to the spot, in all her voluptuous glory whilst he stood there smiling. "Enjoying the view?" she said, followed by "this better be worth a bloody discount" as she sashayed past him and out of the room. I only just had chance to scarper back upstairs as she came out of the kitchen and marched upstairs to berate me for letting him in like that. She refused to come downstairs until after he'd gone, but then admitted that she had found the whole thing a massive turn on and demanded that I gave her a serious seeing to there and then. It didn't take long to strip her down to her thong and it was absolutely drenched and musky smelling, she was like a bitch on heat. It took her no time to orgasm as I took her from behind and she just kept coming and coming before I finally unloaded into her. Even then she wouldn't let me pull out, she just wanted to feel cock inside her. I have no doubt that she would have shagged the plumber as well if he still been there. We've discussed it since and she has admitted that the whole exhibitionist thing is a big turn on for her, but it has to be "accidental". I'll just have to see what else I can set up, but I'm pretty sure I know of a certain plumber who might be prepared to help out again!