My best friend David had driven up from Edinburgh to visit myself and my wife at our home in the Cairngorms, my wife Cat and I have a very close relationship with David and have often had fun kinky threesomes together.
Recently David has started spanking Cat over his knee which I absolutely love watching. I am a life long lover of spanking naughty girls, so watching my wife wriggling and kicking as her bum turns red is a massive turn on for me.
David and Cat love to run and as it was a lovely sunny day he suggested that they do a long run to a local forest nearby. I absolutely hate running so elected to go for a walk instead leaving them to run and I would follow them walking. I would eventually catch them up after they had stopped.
After half an hour or so my mobile phone pinged, I had received a photo message from David.
I opened it and my heart skipped a beat, the message said "looking after your naughty wife," the photo was of my wife Cat a few miles from where I was walking draped over a fallen tree with my best friend in the motion of spanking her bum.
It was a very erotic shot, Cats running shorts hugging the shape of her cute bottom and David's hand high about to come down on her bum.
My cock instantly started to get hard, "cheeky monkey," I said to myself that will be me spanking you when I catch up with you.
With that my phone suddenly pinged again with a new photo it was almost the same shot with the message "Cat is a very naughty girl mate," but this time Cats running shorts had been peeled down exposing her pink knickers.
Damn! this was really turning me on imagining what fun they were having a few miles away. I was having trouble walking the path as I suddenly had a massive hard on to contend with.
I started watching my phone intently, impatient for a new update.
It came 10 minutes later David had simply put a winking emoticon, the photo was amazing I was impressed that they had managed to get such a fine shot.
Cat was still bent over David's knee but her shorts had been taken completely off and her pink knickers pulled down and hanging off one of her shoes.
Her lovely bottom was a nice shade of pink from being spanked and I could just see her pussy between her legs. I almost walked into a tree as my head swam at the erotic picture of my wife half naked over the knee of another man.