She took my balls in her other hand gently caressing them and I did not know how much I could stand before erupting. “Can I lick it?” “I... you want” I said “I’ve read about this sort of stuff, but never tried it” mom said “What about you and dad” “That side of the marriage stopped long, long time ago, that‘s why you are an only c***d”Mom tentatively moved closer and stuck her tongue out making contact with my cock end. It was just a glancing touch with her tongue but her hand. "Umm, no, just a minute," I said, and made like I was looking around but all the time I was staring up her skirt. Then I spotted the remote; it had fallen on the floor in front of her. "Oh, there it is," I said, "It's under your skirt." I have no idea why I said that, but I picked the remote up from the floor and snuck it under her legs, being careful not to touch her so she wouldn't realize that I had put it there. Belatedly, I glanced at my Dad, to make sure he hadn't seen me. He wasn't. Well all I could do was fake a little laugh for him because really the thought that the sight of me, his mother had given him an erection kind of made me feel sexy and sort of dirty at the same time. What the hell was I thinking? Here was my 23 year old son who I of course think is good looking, sitting not three feet, at almost eye level from me on the edge of the pool, with a rock hard cock that I had caused.To try and put him at some ease I just said "don't worry sweetie, I've seen your. I glanced out the back door and found several large beach towels laid out together, and a couple of women’s swimsuits. There were also numerous empty beer cans spread around. “You guys fall asleep outside last night?” There were several snorts and chuckles, along with at least one sheepish grin from Jeff.“So, have fun?” asked Christy.It felt like I was in the middle of two different conversations. Mom and Christy wanted to know all about my date, where we had gone and what we had done, and they.