I have lived alone since I split with my wife 8 years ago, I'm happy living alone and most of the time when I'm home I walk around the house naked. I don't see the point in wearing clothes if I'm on my own. If someone does knock, I'll put on shorts and t-shirt or even a dressing down if its early in the morning. Most mornings the post woman, Liz, always knocks even if it's only a letter that could go through the letter box - we've chatted for years, and she's always having a laugh and joke with me, sometimes flirty, sometimes more innuendo than anything. She knows that I spend most of my day naked from the chats we have. Liz is in her mid to late 40's, 5'4 tall, weight wise she always says she could loose a few pounds but she has a good figure on her, she has a nice pair of firm looking tits (I estimated them to be 40C) for her build and her nipples are easily seen in the summer months as she tends not to wear a bra underneath. She often says 'Am I lucky today? One day your going to forget to put that on (my dressing gown) and give me a eyefull' I often reply with a comment like 'why, is that wishful thinking?' to which she replies 'maybe'. She says that my road is at the end of her rounds, so she 'leaves the best till last' she says. My road is a very quiet cul-de-sac, so there's no passing cars or pedestrians, My house is the last on the right as you enter the road, opposite my house is an open field, so there's no one over looking my house, and to the side is a high railway embankment which is heavily overgrown, with my door on the side of the house no one can see my front door. Some weeks ago in all that hot weather, we had a sudden unexpected downpour that lasted ages, I could see Liz coming down the road and she looked drenched without a coat, so her t-shirt was soaked and by the time she reached my door, I could clearly see her nipples through the material. When she reached next door, I thought that I would cheer her up if she comes to my door. A minute later there was a knock on the door, I didn't put my dressing gown on and opened the door slightly, Liz said 'only a couple this morning' then she looked and said 'have I been lucky today?' So I opened the door fully to reveal that I was naked, Liz said 'nice' looking down at my cock (I'm only about 7 inch erect but even flaccid I'm fairly thick). I thought it was time I tried my luck and said 'look, its pissing down, you're soaked. Do you want come in for a bit?' Liz said 'for a bit of what?' laughing, then said 'okay, I'm finished anyway' and she came in. I led her to the kitchen and said 'here's a towel, if you want to use the bathroom' Liz replied 'I'm okay here', she then lifted her t-shirt over her head to reveal her bare tits (she rarely wears a bra she said), her nipples were large and dark, the areola was a good 2 - 3 inches across. She then slipped her shorts off and stood there in just her knickers. She looked a lovely sight, which actually made my cock stir. I jokingly said 'don't you want me to dry those?' Liz laughed and said 'they're only damp, but okay' then slid her knickers to the floor. I made coffee as her clothes dried in the drier, Liz sat there naked, dying her hair with the towel. I sat down opposite and said 'I bet you thought this wouldn't happen this morning when you started work' All she said was 'I was hoping it would one day', her nipples were getting harder by the second. I said 'are you cold or excited' pointing at her nipples. All she said was 'horny, my husband hasn't fucked me for ages, and every time I knock on your door I keep hoping......' 'So you want to fuck me' I said, Liz just sat there, then I said again 'so do you want a fuck, now?' Liz looked at me and said 'sorry, was that a bit rude?' I stood to reveal my cock was a hard as a rock and said 'no it wasn't, come with me' I took Liz by the hand, lead her out of the kitchen and upstairs to my bedroom. I lead her to the bed, turned her so her back was again the bed and pushed her to the bed. She lay with her feet on the floor, I lifted her legs, put her feet on the bed and spread her legs revealing her unshaven pussy, I lent forward and kissed her pussy lips, then slowly pushed my tongue between her lips. She gave a slight moan. I found her clit and started to lick and suck at it. Within minutes she was pulling my head into her pussy as she began thrashing about on the bed - her orgasm hitting her. When she had calmed down, I slide her up the bed and climbed on top of her, slowly feeding my cock into her now soaking hole. I slowly started to slide in and out of her, she was groaning as I did, her breathing was getting heavier and heavier. After a few minutes I could feel that I was going to cum, so I pulled out and slide in a finger and finger fucked her until I had calmed down. She then said 'can you fuck me doggy' I told her to kneel on the bed and hold the head board, she did as she was told, then I slide my cock into her wet pussy from behind and started to ram into her, her tits were swinging back and forth every time I rammed into her, I grabbed hold of them and began to squeeze the nipples every time I rammed in. Liz was beside herself, she said 'fuck, I'm cummin again', so I sped up my rhythm and soon I was on the verge of shooting my load. I asked 'do you want my cum in you or out' Liz screamed as she came 'in me, in me' I let loose and shoot my load deep inside her. We both seemed to orgasm for ages, and I seemed to shot more that I normally do. When we collapsed, we both lay there. I said 'I bet you need to be going back? She nodded, but said 'maybe I'll be lucky again tomorrow?' Every morning since, Liz had knocked on my door - even when I don't have mail, and every morning she comes in and we fuck. Her workmates are none the wiser as I'm the last house on her rounds, her husband is none the wiser because she says that he hasn't been near her pussy for ages. Because my rear garden is not over looked to the side of my house, we have fucked there many a time in the good weather, Liz says that she loves to fuck outdoors.