I was working for a small insurance firm that had it's office's next to the back side of a strip mall with a number of businesses including a breakfast and lunch diner. The guy who owned the diner was a good-looking guy name Mike. He was in his mid-thirties and in good shape. He was the main cook for the diner. I'd go there several times a week for both breakfast and lunch. I got along good with Mike and his coworkers.
It was a couple of months after I had been working there that I noticed some of the fringe benefits that Mike got. It was early afternoon, just after Mike closed the dining area and was probably doing his cleanup and other closing activities, that I noticed that one of the restaurant supply delivery trucks would always stop about the same time. Our office was on the second floor of our building, with most of the windows facing the street. The window for the bathroom faced towards the back side of the strip mall, including Mike's back entrance. The truck was not quite blocking the view to the door. I had stepped back to use the bathroom and looked out the window to something that changed my life.
The delivery truck guy was standing in the door frame and I could see that Mike was giving him one heck of a blow job. I was shocked as I had watched Mike flirt with many of his female customer's and had gotten the hint that some of them may have tipped him with things other than cash. I was also shocked at how erotic I found it, my cock was rock hard in my pants. I'd never gotten an erection that fast before. I watched mesmerized as Mike was mouth fucked by the delivery truck guy. I could see from my vantage point that the delivery truck guy was nicely hung as well. The truck guy soon came and Mike swallowed his load. He stood up with a smile and the truck guy then followed Mike into the back room. They had left the door open so that I could see in, but no one else could. They embraced as they went to the back room. There was a cot there. The delivery truck guy started removing his clothing and I saw Mike do the same. Soon they were both naked.
They embraced again and kissed. I was still amazed that they hadn't closed the door. The delivery truck guy got on the bed on all fours. Mike picked up a tube and squeezed some of the contents on his hand. He then put some his hard cock and reached his other hand over to the asshole of the delivery truck guy. Mike worked a finger into the other guys ass. I could see them talking while Mike did this. Mike climbed up on to the cot behind the guy and got between his legs. Mike pulled out his finger and placed his cock between the guys ass cheeks and pushed his cock into the guys ass. From the reaction of the guy, Mike was doing it just right. Mike's cock was soon was buried to the hilt in the guys ass. Mike waited a few minutes then began fucking the guys ass. Mike had his hands on the guys hips and was taking long deep strokes. From their faces I could see that they were both enjoying it. Mike fucked him for about ten minutes. He came with one last deep stroke and I could see that it was a good strong orgasm. The other guy smiled back at Mike. Mike pulled his limp cock from the other guys ass and got off the bed. The guys then cleaned up and got dressed. The delivery truck guy hugged Mike, got in the truck and took off. As he closed the door, Mike looked up at my window and smiled. He knew I was there.
The rest of the afternoon was a blur. That night when I got home, I stripped off my clothes and lay on my bed and jacked off to a tremendous orgasm to the images of the afternoon. I ate dinner and then relaxed for the evening. Before bed I jacked off again, this time with two fingers deep in my ass again thinking about the guys having sex.
The next morning I made sure that I had breakfast at the diner. Mike talked about the usual stuff as he cooked my breakfast, when it was done, I decided to ask him about the other day.
"I see the food delivery guy usually stops for a while in the afternoon."
"Yeah, he likes to shoot the breeze for a bit. I'm one of his last stops for the day." Mike said.
"Or maybe he likes the way that you tip him." I said with a grin.
Mike smiled. "I don't usually tip the drivers."
"It could be the special way that you help them unload."
"I know that he likes that. Are you saying that you might be interested in help like that?"
"Yes." I said without hesitation.
"Ok. When is your afternoon break?" Mike asked.
I told him and he told me to stop by the back door at that time.