My office

Once, nearly two years ago now, A guy brought a part over to be fixed. After fixing it and settling the paperwork he ask to use the bathroom, which is just off the main floor of shop, he went in, and left the door wide open, got on far side of toilet and flopped his cock out to piss. I looked over at him, not really spying , just glanced up and then did a quick double take. He grinned, finished his chore, picked up his part and left. A few days later he came in with a piece of junk I wouldn't wast my time trying to fix, could buy it new for under $10.00 dropped it on the counter and we talked about it. He kept pulling at his dick like something was chewing on it. I ask-sort of as a joke if he had a squirrel in there running around. He said No, you want to see. And with that he plopped his nearly hard cock out and just grinned at me
I knew what to do, I had sucked a couple before that so i reached out and gave it a tug or two.
He then said, suck it a little get it the rest of the way hard and then bend over the desk here and let me fuck you

I guess when I said I had no condom he knew he was in business, he pulled one from his pocket, and the rest as they say is history