We had moved into our new house in a new area about six weeks earlier. We had not got to meet many of the neighbors, as we had been busy. Our next-door neighbors said that they had ensured that we were invited to a party at the large house at the end of the road. Apparently the hosts are a nice couple who were well known for their parties.
Our neighbors were good enough to go with us and introduce us to many of the thirty or so guests. I didn't remember many of their names and was not sure who the hosts were. It was a warm evening and there was dancing going on in the large garden. Both in the house and the garden people sat around drinking in groups that circulated regularly.
June my wife loves to dance and as I don't I am always happy for her to dance with others. She was wearing a fitted dress that she always wore without a bra. The front was reasonably low cut but her small, but beautiful, boobs were decently covered. The dress was short enough for a hint of her panties to appear occasionally when she danced to the faster numbers.
Between dances she would usually find me and join in the conversations I was having. I did not pay much attention to whom she was dancing with until well into the evening. There were two men who started to monopolize her time on the dance floor. I watched as she danced to both fast energetic music and slow numbers. Both of the men took advantage of the slow tracks to dance close pulling her onto their bodies. A couple of times I noticed her move a roving hand a little higher away from her bottom. Neither man seemed to be pushing his luck and she was clearly not concerned.
While drinks were flowing I did not notice any excessive drinking. Conversations flowed and I got to meet many of our new neighbors. After one close dance I saw June disappear into the house. I thought nothing of it as I thought she was probably going to the bathroom. It was not until she had been gone for many minutes that needing the toilet myself I decided to investigate.
Thinking she was probably the host I asked the lady pouring drinks in the kitchen the way to the bathroom. With a broad attractive smile she said she would show me, as she needed to go anyway. When we got upstairs to the door of the bathroom I decided that it was probably best toilet etiquette to let the lady go first. After she reappeared I went in feeling much better after a pee.
As I left the bathroom the lady was standing outside a room just along the corridor looking in. She put a finger to her mouth to quieten me and another to invite me to join her. The door was nearly half open and I could easily see the large naked bottom of a lady as she bounced up and down on a prick. The lady was facing away on her knees with the man lying on his back. We could see the man's face and he knew we were both watching. His smile was broad as if he were the cat that got the cream.
Although aroused by the view I was slightly embarrassed about being so voyeuristic. It was just as I was about to turn away that I noticed the dress bunched around her waist. I couldn't believe it. It was my wife and I had not recognized her large bottom as it bounced up and down. Now I did just stand and stare at this very erotic if disturbing sight.
My host took hold of my hand and dragged me into the room with her. In a stage whisper she said.
"He does always love the ones with the big bottoms."
At this my wife spun round and her face went from clearly very aroused to crest fallen in a blink of an eye.
"Oh Jonnie I am so so sorry."
"Sorry about being caught or sorry to be fucking someone else?"
She made to climb off the man until our host interjected.
"Oh I have never seen anyone fucking my husband with such enthusiasm. I take it this is your husband. Don't let us being here spoil your fun."
Stepping forward she held June's shoulders in an attempt to stop her climbing down.
"Have you ever seen your wife so animated? Is she always as excitable as this? It looked like she was trying to not only get every inch of his prick in her pussy but both his balls too. You wouldn't want her to stop now would you? You carry right on there's a good girl."