Long ago,I would sometimes avoid the main roads coming back from work and drive home across the moors,bit longer journey but you kept moving. There were a few small gravel parking spots for hikers by the road side and also one of those old bungalow style toilets. Needing to use the facilities I stopped. Inside there was one doored cubicle and an open urinal with a small step and stainless steel back. There was a man in his mid 30's already standing there,I stepped up to join him and before I even had the chance to unzip I saw he was wanking a decent sized,very hard cock. He didn't say a word just stepped down and turned toward me,I dropped to my knees and started sucking him off,I don't know how long he had been wanking before I got there but he was clearly ready to cum and after a couple of minutes I felt him tense. But then he surprised me by pulling out my mouth and shooting two huge ropes of spunk onto the back of the urinal. Still no words,he just pointed at it. I leaned in and licked it off the steel,tasteing piss as I did. He patted me on the head and left.I felt so used and dirty I thought I was going to cum in my pants.I leapt into the cubicle pulled my pants down and shot my load. I went back a few times but never saw him again. The toilets were demolished without replacement some time later.