Yes I have some experiences of the subject you mention, and it's a kink of mine too. Get in touch and maybe we can talk.
Mine began when my Mom went on a night school course.
(Strictly specking my stepmother but she married Dad when I was little and hence became basically my Mom.) It was then the late 1990s. Mom turned a lot of heads being a mature sexy lady with a glamorous, mischievous look about her.
Dad used to drive her to and from the college. She was studying computers and there were several young men in the class with her by what she said. Some would help her with her work and chat her up, she used to giggle as she told us about it. Dad was a shy man and would blush as she teased him about it. A couple of times I heard them discussing it in bed at night. Dad sounding worried and she teasing him.
One evening I answered the phone and it was mom, laughing with guys voices laughing too. She told me to get Dad to come early tonight for her, and to look for her in the mens room across from her usual classroom.
Dad frowned, looking panicked, and got his coat. As he left, I heard him mutter, "Oh no, please no."
They returned a good two hours later, Mom looking pleased and giggling more than ever, and Dad looking sheepish, he wouldn't look me in the eye.
A few days later I got a strange email entitled "Your Dad takes good photos!"
The rest of the text was empty but there was a photo attached. It was Mom, topless and leaning over a sink in
the mens room, with her panties and hose hanging off one leg. A young guy was behind her with his hairy cock lodged in her asshole. Mom was grinning broadly at the camera. It looked like she'd already been fucked, too, as there were blobs of goo in her pubes. She had one leg up on the pipes below the sink and she had pulled open one buttock to expose the sight of her being cornholed.
I said nothing to them but I jacked off like crazy all night, my conflicting emotions of shock and humiliation heightening my arousal to a frantic daze.
There's much more if you want to hear it!
FUCK MY WIFE!