Before we left for our hike in the woods, I prepared a surprise for you. I know how much you love it when I wear a butt plug without your knowledge, so I discreetly put one in my asshole before we left.
Because we always end up doing naughty things in the woods, I knew you'd find it, and would be quite pleased. You played with it, but you especially wanted to see it.
I pulled on my butt cheek, revealing the pretty pink diamond. I even bent over so you could have the best view possible.