The first of a few incidents.
My 15 yr old stepson Scott was coming to visit us for a few weeks. My husband went to pick him up. While I was waiting I decided to get in some jilling, because I knew it would calm my nerves. I was sitting on the edge of my bed with my shorts and panties pulled down just enough to fit my 'tweeker' inside. 'Tweeker' is what I call my chrome four-inch vibrator. It doesn't have much power but it's good enough for me to press against my clit and buzz myself to blissful paradise.
Anyway I'm sitting there with my thighs quivering and my pussy juicing up. My eyes were closed and I was breathing with a light pant. For some reason I opened my eyes and Scott was standing in the doorway of my bedroom. He blushed, so I quickly covered up and managed a nervous, 'Hello.' He returned the greeting, before apologizing and going to his room.
You can imagine that I'm full of emotions. One relief was that my husband dropped him off. I didn't know how to approach Scott. All I told him was that masturbation is a natural and common thing, with people of all ages and backgrounds enjoying it. Then I added for him not to mention it to his father.
My husband knows I jill, but I didnt want him knowing that his son found me on the brink of an orgasm. I asked him if he had any questions and if he did to feel free about asking. After that I began to keep my guard up and I did my jilling a little more discreetly.