There was an adult bookstore with arcades in our town, and it was right off a main thoroughfare so we passed it often. We were about 30 at the time. One night we drove by it and my wife noticed the parking lot was full and asked me "what goes on in there, anyway?" Sensing an opportunity for some perverted sex, I took the bait and explained it to her in terms I thought a woman would appreciate. And she did. She asked me if we could turn around and go in there "I'm horny," she said. So was I.
We were both fully clothed, but on future visits with my wife she'd go without panties and bra, with a easily removeable dress or one that could be rolled up to make her more easily accessible. And bring extra tissues and clean up stuff.
The bookstore was right outside the city limits of the college town we lived in, and the "candidates" lurking about inside were sometimes students at those schools, there was actually some "quality" guys in there, not the usual crew in these places. There was a little showcase on the wall in the hall leading to the booths - it had covers of the videos being played and that's where guys hung out waiting for men or women they hoped to enjoy through the gloryholes or in the booths. My wife understood how it all worked right away, and she made eye contact with a guy, touched his arm a little bit and we motioned for him to follow us. We went into a booth (me thinking I was protecting her - what a joke that was!) and he took the next booth. It was on!
Long story short, after the 5th guy, her jaw was getting sore and we headed for him where she literally raped me (a willing victim). We went back there three times and the last time she invited a guy into our booth and I moved to the next booth to watch her through the gloryhole - standing, she bent over the little bench so the young man could take her from behind, which he proceeded to do (she had an orgasm, and her moan blended right in with all of the videos playing in the other booths. There was no way for me to clean her up there, so we hauled ass for home - it was a good night for both of us.