Mothers friend

Back when I was young I remember waking up one night needing a drink of water. It was a warm night and went to bed in just my under pants. I came out of my room and went downstairs to the kitchen. Rounding the corner I heard my mother talking to someone, looking in the living-room I seen her talking to an older man. They both were drinking wine and didn't notice me. I went into the kitchen and reached for a glass. In the process I knocked a pan down which made all sorts of noise. She called out,asking what I was doing. I came out and said I was sorry about the noise I wanted some water. Her friend looked up and smiled. Who's this, he asked. Mother said this is my boy and introduced me to him. He said you can call me Sam. I walked up to he and shook his hand and told him my name. He smiled and asked how old I was. I told him, then apologized for interrupting their conversation. He looked at my mother and said I had good manners. Pleased, my mother said thank you then excused herself, and headed to the restroom. Sam motioned for me to sit on his lap. While I sat he rubbed my back. He asked if I played sports, I told him I signed up for football and liked swimming. As we talked his hand slowly moved down to my butt. After a few minutes he asked if my mother was alright, I went upstairs to check on her and seen she was laying on her bed. I went back down and said I think mother had to much to drink. He said we should be quiet and let her take a nap. I said ok and sat back on his lap. As we talked he had one hand on my butt and the other on my leg. He asked mmehow many girl friends I had, I laughed and said none. He asked why, I said I don't know. Ask we talked he moved his hand up my leg. Not thinking anything about it I sat talking. After a few minutes I felt his hand up by my crotch, still not thinking I sat there. He shifted his weight some which moved me on his lap. After a couple of minutes he said what's this. I looked down and relized my little dick was hard. Embarrassed I tried to cover it. He laughed and said don't worry about it, it's natural. I said mother gets mad when it happens. He said quietly, I'm not your mother. I smiled and said alright.