Second of January this year, I walked into my grandparents home to find my Nan on her knees naked. She was moaning loudly, taking a much younger mans cock up her from behind as she sprawled herself across their coffee table. Sat facing them, also naked, was my grandfather stroking his cock telling the young man to "Fuck her harder boy, she loves it".
I'm not exactly sure why I stood there for some time and watched, but I did. Only when my Nan and her young lover changed positions, so she was mounting him cock as he sat on their sofa, did I finally move away.
They didn't and don't still know I was there, but each time I see them now, I see my grandparents in a whole new light. Even my mum who's parents they are, thinks of them as elderly frail people who probably gave up on sex years ago. I certainly know different, and it's kind of changed how I deal with my Nan and granddad.
I'm not sure if I should tell them what I saw them doing that day, or of I should keep what I witnessed to myself. After all I suppose it's their life.