Ooh ooh I have a story too 
I had an afternoon off one day last week and it got to about 3pm and I had been productive all day. I felt a little... Well, you know
so took myself off to the bedroom. It was a sunny day, so I'd opened the blinds iand the window.
We live in a bungalow.
I heard the gardener arrive and strt mowing the lawn, which is at the front of the house, and we always pay a month in advance so I carried on, thinking there was no need to go and see him.
A few minutes later (our grass patch is the size of a postage stamp) it all went quiet. I assumed he had moved on to the next garden - forgetting that he empties the cuttings from each garden into their own green bin and that ours was in the back garden hitch my bedroom overlooks.
So there I am, on the bed, pleasuring myself and I see him stroll past
and I didn't know what to do, so I grabbed my book and raised it in front of my face and held it there 

He would have seen and, more to the point, he would have known what I was doing