This was in the mid 80's, there were 3 ABS with gloryholes then. 0 now.
Back before the days of VCR's and home computers the only place I could find porn movies were the local bookstores that had booths in the back. I would get a bunch of tokens and go in the back find a movie that looked good and go in the booth, early on with the intention of just watching the movie, later planning to jack off watching the movie. The only problem was some of the booths had holes cut in the wall and guys kept coming into the booth on the other side and watching me and rubbing their fingers on the edge of the hole. Next time in I bought a magazine and started covering the hole with it and held it in place with my knee and got to enjoy a nice JO watching the movie. But I did notice there was a steady stream of guys going in and out of the booth next to me and wondered what that was about. Most barely got in the booth and left right away. This seemed to work out well, I got to watch the movie and enjoy jacking off to it but it was getting expensive buying a book for $10 every time.
In the past a friend and I had gotten carried away with show me yours and I’ll show you mine and I ended up sucking him off regularly for a couple years. While we both enjoyed it there came a time when we both had girlfriends and decided that part of our friendship should end. I thought that part of my life was over and I would move on, but surprisingly, I found I did miss sucking cock.
The next time at the bookstore I was a little short on cash so I decided to skip the mag and take my chances. Once I got in a booth I started thinking maybe it wouldn't be so bad to let someone watch, what’s the big deal these guys have seen other cocks and so have I. I started watching a movie rubbing my cock through my jeans and thought maybe I could just rub myself hard enough through my jeans and get off that way and I wouldn't have to even pull my cock out but it wasn't working and I was getting really horny. A couple guys had come and gone through the booth next to me but hadn't stayed so I decided what the hell and pulled my cock out and started stroking it. Someone came into the next booth and I just covered my cock with my hands for a minute then went back to stroking it. Soon the guy started rubbing his finger on the edge of the hole and I wondered why he was doing it. After a short time the finger was gone and I wondered why he was doing so I rubbed my finger on the edge of the hole and right away the guys cock comes through the hole, much to my surprise. Not knowing what to do I just sat there for a minute then thought it looked so hot throbbing and bobbing maybe I'll just stroke him for a while. As soon as I touched his cock it jumped and after a short time stroking him I remembered how soft a guy’s cock was and how good it felt. After stroking his cock a while he pulled out of the hole and I thought that was it, then the finger was back on the edge of the hole so I put my cock through the hole. Right away I felt the firm grip of someone who knew how to handle a cock and it didn't take long and I felt wet lips surrounding my cock. After slowly sucking my cock he wrapped his hand around the base of my cock and my balls and started sucking harder and faster. In no time at all I could feel my balls tingling and knew I was going to cum. Not knowing what to do I tried to pull back so I wouldn't cum in his mouth but he held me tight and that put me over the edge and I started pumping a huge load in his mouth. After he finally released my cock I sat on the bench drained, between the excitement of the new experience and the great blowjob I had just received my head was spinning. As I sat there in a daze I saw movement at the hole and my new friends cock comes through the hole. Just wanting to relax a minute I reached up and started stroking his cock wondering what to do next. After a couple strokes my mind went back to how soft his cock felt and couldn’t resist the urge to have a cock in my mouth. I always loved the contrast of how soft the skin was but how hard it felt at the same time. As I enjoyed the sensation of having a cock in my mouth again, I soon felt his cock start to twitch and swell and quickly decided to take him in my mouth. I grabbed his balls and this must have set him off as he started cumming in my mouth, not a huge load but enough to remind me why I liked sucking cock.
After he finished I sat on the bench dazed by what had just happened. I heard his door open and close and I zipped back up when I heard the door open and close again, and soon after another cock came through the hole. I looked at it and realized I was too drained for another so I left. This turned out to be the first of several visit to the bookstore.