Since our initial meeting with Mr P six months ago Kate and I have been regular visitors to his cottage and he has been to see us at home a few times.One such occasion was the sunday before last where Mr P was invited to our home,it had been arranged that this would be an afternoon on which I would be able to observe Mr P at work.For the most part Kate and Mr P's sessions take place in the privacy of his study at home as this-so he says-enables Kate room to develop and express her needs. I know that this often involves Kate undressing and being spanked,strapped and caned in a variety of often humiliating positions. On Saturday night before Mr P's visit Kate was apprehensive and full of nervous excitement (as she usually is on these occasions),and as we lay together in bed she told me that she would find it very embarrassing indeed if Mr P had her perform in my presence as she had been tutored to do in his study the Saturday we had visited him two weeks ago.It was to be a surprise she said,Mr P had planned it as a little demo for me to see just how well Kate had "improved" and how obedient she was becoming. We greeted Mr P on sunday afternoon and invited him in,he smiled broadly at me and then turning to Kate and said "And how is the lovely Katherine this afternoon?" Kate smiled shyly and said "I'm fine thank you Mr P". Kate was wearing a nice black and white dress that showed off her ample curves to perfection,presently we all sat down and so began the afternoons entertainment. Mr P handed Kate a small package and told her to go and get changed and to report back immediately,as she walked out I saw him ogle her broad backside most appreciatively. Then he produced his small black holdall and took out a wooden paddle,a red leather strap,and finally a crook handled cane that was quite short. "I think you will like what I have lined up for the afternoon" he said as he placed the implements on the coffee table. When Kate came back to the room I was utterly speechless. She had on a pe kit of sorts,a small vest that her big tits caused to rise up over her belly button,and a really tight pair of white shorts made of thin material that were as tight around her thighs as they were around her big arse (which they struggled to cover),Kate also had on a pair of plimsolls and a pair of white socks. I saw Mr P leer at the sight in a lascivious fashion-I knew the dirty old man had probably made my wife dress like this before. "Now then Kate lets show your husband how I've been putting you through your paces eh? Lets start with some running on the spot-and I really want to see those knees nice and high". Soon we were treated to the sight of my wifes big breasts bouncing around everywhere and the oh so tight shorts disappearing into the crack of her wobbling cheeks,her face was flushed as she maintained the effort,and she was soon puffing and panting breathlessly. At this stage Mr P stopped her and had her put her hands on her knees and stick her bottom out,then I was invited to give my own wife a few smacks on the bottom which she took with a few yelps. Mr P then had Kate stand up and take off the vest and shorts leaving her completely naked,he told her to stand in the centre of the room with her arms at her side,then he sat next to me on the sofa and enjoyed the sight of her big heavy melons and thick nips,also the dark haired v of her tight little cunt. Kate liked showing off to us,soon there were other exercises,before Kate was made to bend over with her knees on a large foot stool with her legs apart and her elbows resting on the chair in front of her,in this position she was directly opposite us and when Mr P barked at her to arch her back and stick her bottom out she complied immediately giving us a lovely view of her pink cunt lips and her small pink rosebud arsehole that peeked from between those glorious big cheeks. When Mr P was ready he delivered a ferocious strapping to my wifes poor bottom,I was amazed how she took it,even though she howled and pleaded Kate did not attempt to move-Mr P certainly had her under control,and I enjoyed the view of her arse shaking with each hard stroke. Mr P showed me how to cane Kates bottom properly too,allowing me a couple of strokes,before giving Kate a good six of the best himself as she touched her toes.