I lived at home with my Mom until I was 20. My parents were divorced back then. She has since remarried. She has always been a fun loving free spirited woman and she has a great sense of humor.
One Saturday afternoon I had the house to myself. My Mom told me she was going to be gone almost all day long shopping with her friends and then eating out somewhere. She had only been gone about two hours and I was so horny. I had a porn tape hidden in my closet so I got it out and put it in the VCR in the living room. I was so hard watching the movie. I eased out of my pants and I took my shirt off too. Sometimes when I jack off I like to get totally naked.
I was so into the movie I never heard my Mom walk into the house. She had cut her shopping short and returned early. I was leaning back on the couch with my legs sprawled apart holding my 7-1/2 inch dick in my hand. 'Feeling good is it?' my mom said. Damn! I sat straight up in panic. I started apologizing profusely. She said 'It's OK ..it's OK!' She then said 'You know, I haven't seen you since you were a little boy. Let me get a look at you. I was standing by now trying to make a dash for my room, but she had stepped in front of me. I was covering my dick with my hands. She reached down and pulled my arms away. My dick was rapidly softening by now, but she looked closely at it and the more she looked at it the harder I started getting again. She watched it raise all the way back up.
She looked at me straight on and said 'go ahead and finish what you were doing.' I said 'What?' She said 'you were taking care of yourself watching that dirty movie' (which was still running on the VCR!). I was saying things like 'awe come on ... I can't ...' She asked again. I was rock hard. She said 'does watching people fuck make you hard?' She used the F word! I told her it did. 'Come on' she said as she lead me back to sit on the couch. I couldn't help it ... I took my dick in my hand again and slowly started jacking it as I watched the movie. On the movie this guy was screwing a beautiful woman with his huge dick. My Mom said 'she sure is pretty ... would you fuck her?' The F word again! My Mom was watching me carefully. My eyes were darting between my Mom and the movie. I had to cum. I shot rope after rope of cum onto my stomach. My Mom got some paper towels and gave them to me. She asked me if I felt better! I told her I did, then she said 'from now on, I suggest you take care of your business in your room with the door closed!'
I never did it again in front of her and we really never talked about it again.