Not 50 Shades

Met a guy recently and things got to the point of us having sex. Quickly found out he was into bondage and kinky sex. But I was up for the challenge. Problem is, once her got me tied up and in a vulnerable position we did a few things I probably won't do again. A lot of it was fun and the sex was good.
After he had his orgasm I was still tied down on the floor. He straddled my face and looked down at me. He lowered himself and had me lick his ass. Suddenly he stood up and as I looked up at him he aimed his cock and my face and PISSED on me. I tried to say stop but I got piss in my mouth. I couldn't get away I had to close my eyes and mouth until he finished. I felt so nasty!