Back when I was a 16 year old boy, there was a older single black guy that lived on the corner of the next block. During the summer I mowed his as well as several other yards in the neighborhood, he always paid me more than I contracted his for. I always felt a little funny inside when it was just me and him, it ended up one day with both of us naked, he was laying on his back and I was straddling him. I knew he had a hardon, I could feel it under me, it was really exciting moving back and forth in it, feeling it under my crotch. I felt him fingering my ass, and it was slick, when I moved forward his dick raised up and when I pushed back the head of it was touching my ass. The feeling of it touching me was hard to explain, and I started to lightly push back on it, it was starting to slip in and I was thinking, wow, then it was in and he put his arms around me and started thrusting upward driving it in farther with each thrust. Riding him was really exciting, but when he started thrusting into me I couldn't even think of how to explain the feeling. I knew what he was doing to me, but at that moment its what I wanted him to do, and when he got through I thanked him.