Happened to my wife years ago.
Wife and I (Due to my job) have been invited on numerous ocassions to various embassy parties. Garden parties, tea parties, drinks, those kind of things. One summer we were invited to a party at an embassy in the Hague. Usual chit-chat, drinks etc. When around the normal time these events stopped and everyone departed I couldn't find my wife. So went looking. Couldn't roam too far as being in the embassy grounds things were not open to the public. So searchy searchy, lookie lookie for about ten minutes when I had the idea to go to the very back of the embassy that backed onto the road behind and see if she was there.
Why?
I have no F**king idea. It just popped into my head to go look there. So walked around the side of the building and into the grounds at the back. A very smart Rolls , a Bentley, and a kit car of some description, looked fancy, but apart from that, no a clue to what it was. Looked in to the Bentley first. Nada. She wasn't there. Approaching the Rolls it became clear very quickly that my loving wife was playing bobbing for apples. Only it wasn't any apple she was bobbing her mouth up and down.
As I got to the window of the rear door I saw that my loving wife had her tits out, dress up and was rubbing between her legs at her clit as if doing it at that speed the Genie would be granting her wishes for life. The guy's hands, or should I say young mans hands were all over her tits like a rash on baby. and when he wasn't doing that he was pushing her head and mouth up n down a impressive young mans cock.
Voyeur time. Watching them both had me hard as steel, but even my cock pailed when his came into full view. I couldn't hear what what said but the next minute she was climbing onto the monument of sex and sliding all the way down to fully impale herself on his cock before she rode him like she bought him.
And god did that kid keep cumming. The load was so large that when she dismounted it ran down her thighs and legs before she could even think of using something to clean up. It was then that they noticed I had been watching the whole thing. But I wasn't alone in viewing their performance.
Hello Mr Embassador, Fancy meeting you here.
The ambassador signaled for them both to get out, my wife trying all manner of things to make herself respectable,( not that she could be called respectable after that performance). You two wait here while I talk to my son. A few minutes later afte much nodding of the head and outstretched arms, the young lad trooped back towards the building with the biggest shit eating grin one could imagine.
I can't tell you how disappointed I am to find you using my car for your personal sexual gratification with my son. Looking at me he mearly said. I know you didn't know as you were indoors at the party. So I want to talk to your wife about what she has done. I promise you she will arrive home safely.
My wife arrived back four hours later. Said nothing. and continued her Sunday as always. So I decided to wait untill she wanted to talk about what happened.
On the Monday afternoon while at work a courier was brought to my office with a small package. Upon opening I saw there was a note attached to a USB stick. The note was personaly written by the embassador and addressed to me.
Dear Mr ***************
No doubt you were you of the mind that something had gone amiss during the "talk" between myself and your wife.
Allow me to alay those fears. The "talk" took a little longer due to a change in circumstances and the necessity of completing a mutal understanding between both parties. Please accept the USB as my sincere affirmation of a conclusive agreement between the parties concerned.
Signed yada yada yada.
Checking my door was locked I loaded the USB and sat back expecting to see the Am talking and some kind of document signed by my wife and the Am. What I saw was my wife ( ok the quality of the video wasn't cinema standards), the Am and his son all saying they agreed. Then nearly two hours of the two of them fucking my wife in every hole multiple times. Her being draped over the Rolls and used. And as a final act giving both of the blow jobs at the end of what was then our drive way. What made the video even more impressive was that the Am had at least 9 10 inches of cock and knew exactly what to do with my wayward wife.
It wasn't untill I thought back to her arriving home that I recalled she was walking a little bit gingerly.
I know this isn't really a kink, but then again it is. Enjoy.