Don't Disappoint Me

Many years ago when I was maybe 19 or so I was feeling Horney one night and went to the nearby porn cinema. There was always men there to suck cock and to have there cocks sucked. Anyway I was figuring to get a nice blowjob but stopped on the way there and got pretty pissed.
So I get there and am watching the main flick a white girl taking three big black dicks in her. Naturally my cock is hard and I'm really feeling randy.
A much older maybe 60ish man with a heavy Russian accent sort of buttonholes me and says he wants me in a booth. There was private booths where you could watch films and wank or whatever. So we go into a booth and the man tells me that "You are going to lick my balls and suck my cock. And you will not disappoint me..."
So I slipped off the running shorts I was wearing and I'm standing there in just trainers and a short t-shirt and ask him to play with my arse. I figured if he fingered me it would get me even hotter to suck him off. But I was surprised when he suddenly squatted down and began to lick my arsehole! I never been rimmed before and it felt amazing. I was getting so hard and wanted to suck on his big balls and swallow his cum. He just kept eating my arse and next thing I knew I was shooting my load on the wall and the floor. Once I had summed I was embarrassed and ashamed and I grabbed my shorts and ran out of there, caught the next bus and went home to wank probably three times before I went to sleep. Guess I did disappoint him. Over the years I have often wondered what it would've been like to suck on his balls and get him rock hard. He probably would've insisted on fucking me arse and I probably would've loved it...