OK so this might be a fairly long and tame story, but I (m35) have had an urge to be 'accidentally' seen naked for a while now, and with my wife's (f34) mother (f60) frequently coming to our house to help with child care, it seemed like the perfect chance.

The first time was quite unplanned, she arrived at our house when I was still naked in bed and came upstairs unexpectedly. My wife had left our bedroom door open, which is right at the top of the stairs. It was just a case of timing it so that I got out of bed at the time MIL was arriving at the top, pretending I hadn't heard her - quite easy to make it look an accident. When she saw me she stopped dead and her eyes drifted down and lingered for a couple of seconds before we both blurted out "sorry!" and I shut the door.

We talked about it in the evening, and I apologised again, and she said it wasn't a problem. I asked if she'd seen 'everything' (knowing she had) and she only repeated it wasn't a problem, but with a smirk on her face.

I left it a few months before getting the courage to try again. This time, when she was coming round in the afternoon and I was home alone, I had a shower at the time she arrived, so that I could pretend not to hear her come in the house. Afterwards, I went downstairs to wash my towel, and was 'surprised' that she was already in our house. Again, her eyes drifted down and then she looked very carefully at her ipad while I spluttered apologies.

I was quite nervous so went up to get dressed, then came down and apologised again. She said she wanted me to be comfortable in my own house, and that she didn't mind, and that I seemed much more embarrassed than she was.

The next time I was much more blatent. When we were alone in the house, I told her I was going to shower, and she used the bathroom first. I waited naked outside the door, and she saw me when she came out but didn't comment. Then after my shower I went downstairs, calling out to her that I was coming. When she saw I was still naked, she said "You are determined, aren't you?" I replied "You said you didn't mind, so.." and she said she didn't and we held a 5 minute conversation with me standing naked in the doorway.

She stopped being so transfixed by her ipad and started looking at me more normally. Later on, I felt a bit guilty so I checked she didn't feel uncomfortable about it, and she said she was fine with me being naked, and she wouldn't tell anyone, but she didn't think she'd be joining me, as she didn't want to put me through that, she joked self-deprecatingly. I was so nervous I said "I wouldn't ask you to", but it planted the seed in my head, and later I wished I'd said something more encouraging.

I haven't had the chance since, as her husband (m70) has decided to start coming with her. I don't know if she told him or not. He hasn't said anything but I doubt he would anyway. But he'll be going away by himself soon, so I will have a window coming up. My two goals are to spend some time sitting next to her while naked, perhaps turning the conversation to her trying it out, and separately for her to see me with an erection. That second one will have to look like an accident, and so far I've been too nervous for that to happen.

If anyone is interested, I'll let you know how I get on.